In January 2008, Jack and his wife Tanya revealed they were expecting their second child together. In June 2008 Tanya gave birth to a baby boy whom they have named Jack Jnr.
Jack's nicknames are: JB and Jables.
Jack made a musical appearance at the 2007 Academy Awards.
On Tenacious D's first album there is more skits then music tracks.
Jack is mentioned in Bowling For Soup's song "High School Never Ends".
His parents, who were both rocket scientists, divorced when Black was 10.
Jack is about to star in his new movie The Pick Of Destiny.
Jack hosted the 2006 VMA awards.
Jack's first child, a boy Samuel, was born on June 10, 2006.
Jack hosted the 2006 Nickelodeon Kid's Choice Awards.
Jack has had gallstone problems since he was 16. He recently (late 2003) had his gallbladder removed.
As a kid, Jack used to hide wires in his clothes and let them "accidentally" fall out to make people think he was a robot.
Jack has won around 12 awards, including Best Supporting Actor (High Fidelity), MTV Movie Award 2004, and Best Comedic Performance (School of Rock).
Jack often competes for the same parts as Philip Seymour Hoffman. On the School of Rock DVD audio commentary, he jokingly calls Hoffman "my nemesis."
Jack revealed on an Australian late night variety show that his favorite KISS rock song is 1982's "I Love it Loud," where he began singing parodied lyrics to the first verse.
Jack has been married to Tanya Haden since the 14th of March, 2006.
Jack made his film debut in 1992 in the movie Bob Roberts. Although he was just a backgroud voice, it lead to other roles, such as his appearance on The X-Files.
Jack's solo album is called Got Jack Black If You Want It and it has 6 tracks.
Jack and Kyle Gass will be releasing the first theatrical Tenacious D movie later this year currently entitled Tenacious D: The Pick of Destiny.
Jack eloped with girlfriend, musician Tanya Haden.
Jack dated Laura Kightlinger from 1997 to late 2005.
Jack shares a birthday with Shania Twain, Jason Priestley, LeAnn Rimes and Daniel Stern.
Jack plays a selfish director in Peter Jackson's remake of King Kong.
Jack is an unofficial member of the "Frat Pack" (Ben Stiller, Vince Vaughn, Owen Wilson, Luke Wilson, Will Ferrell).
Jack starred in Shallow Hal, co-starred in Saving Silverman and Orange County and had short appearances in movies like The Cable Guy, Anchorman, and Bio-Dome.
Jack is 5'6" (167.64 cm) tall.
Jack is Jewish, but has said in many interviews that he is truly an Atheist.
Jack: (revealing he dislikes promoting films he is ashamed of doing) When it's a bad movie you want to release it quietly. You try to keep it a secret like an STD.
Jack: I also put Coco Pops in my butt. Why? For comedy and experiment. I was a scientist and I discovered you could put a lot of them up your butt. When I saw my rear end in my nude scene in 'Margot at the Wedding', it actually had a double chin. I've joined a gym because the next time you see me naked I'll be trim.
Jack: (on the birth of their second child, Jack jnr.) I have a new one. It's eating every three hours.
Jack: (confirming he was set to become a dad for the 2nd time) Yes, Tanya's expecting. I'm taking things on a day-by-day basis. I've been told that two children are three times as hard as one child, but then strangely three children are easier than one!
Jack: I don't get hung up on weight.
Jack: If my boobs were on a girl, guys would be going mad for them… I can enjoy them anytime I want!
Jack: I have a pet goal to get the cover of Rolling Stone - that's the coveted sweet spot that they only give to skinny guys. But dude, they'll give it to us if the movie's (Tenacious D In The Pick Of Destiny) a hit.
Jack (arriving in Australia to promote Tenacious D's film "The Pick Of Destiny"): It's a love letter to our fans which starts in Kyle's apartment and ends in hell. It is a great piece of cinema that will get its due in time.
Jack: You know how some babies are born addicted to drugs? Well, I was born addicted to attention.
Jack: With the acting, it's somebody else's brainchild, and I'm just sort of helping flesh it out. There's a special satisfaction to being the brains behind the operation.
Jack: I played, like, a year of piano until I learned the Pink Panther theme. That was my goal. Once I was good enough, I quit. Now my music has to have some rock.
Jack: Are you ready to have your mind blown apart by the most awesome show in the universe. ... Tonight is your night to rage against the machine.
Jack: (on marrying his wife) Well, she wasn't actually my sweetheart in high school. I really liked her then. I was fond of her, but I didn't have the courage to even ask her out, so she never turned me down. We were just friends.
Over the years I would see her every couple of years at a concert or something. We had mutual friends, and she would perform with her sisters (Petra and Rachel, in a musical trio called That Dog. And then one day at a concert I asked her to go on a date with me, and we started dating. The rest is history!
Jack: (on his wife's birth) My wife was a triplet, so there was a chance there would be more than one, but I have my hands full with one baby. I'm excited and a little nervous. I haven't read any books on fathering and discipline and all that.
Jack: (on Mexican wrestlers) In my research I noticed almost all Mexican wrestlers are hairless, including their arm pits. So I waxed my body, except my armpits. I probably should have waxed those too.
Jack: (on the stunts for "Nacho Libre") I did most of my wrestling. The only stunts I left for the professionals were when my character was engulfed in flames completely and when he drive off the mountain into the water 150 metres below. That wasn't me, and you can tell. He's a little skinnier...
Jack: (on the stunts for "Nacho Libre") I did get injured. I was diving out the wrestling ring to tackle my opponent in one scene and hit my head on a metal chair. There was blood. I almost started to cry, but I held it in.
Jack: (on learning Mexican wrestling for "Nacho Libre") I though I might get physically injured. I had to overcome my fear of bodily harm at the hands of some wrestler. But I trained hard, so I was ready physically for the punishment.
Jack: (on Mexican wrestling, known as Lucha) I wish I could take the credit for inventing my character, but he is loosely based on a real person. Fray Tormenta was a Mexican priest who was also a wrestler named Brother Storm. But none of the things in the movie happened to him. To explain my pale skin, we made my mother a Scandinavian missionary and my dad a Mexican deacon. And I based Nacho's looks on Ricardo Montalban in Star Trek: The Wrath of Khan and David Hasseoff in Knight Rider.
Jack: (on training for "Nacho Libre") I trained very hard with a pro wrestler in LA. We went and then I trained in Mexico for a few weeks before we started filming. Lucha is very big in Japan, too, which leaved us room for a possible sequel!
Jack: The moment you start analyzing your own rock is the moment your rock is dead. That's why rock is now pretty much dead. Too much analyzation. No rockalyzation!
Jack: Never for a second did I think of myself as the sexiest guy in the world. When I was a kid, I thought I was the strongest man in the world. Then, the fastest runner and then the smartest person in the world. One by one my delusions got shut down. Now I just see myself as the lamest guy in the world.
Jack: I played, like, a year of piano until I learned the Pink Panther Theme. That was my goal. Once I was good enough, I quit. Now my music has to have some rock.
Jack: I draw my inspiriation from deep within the mind of the superfreak.
Jack: The movie Spinal Tap rocked my world. It's for rock what The Sound of Music was for hills. They really nailed how dumb rock can be.
Jack: You must never underestimate the power of the eyebrow.
Jack: I think of myself as an entertainment arsenal. Like I have my acting bazooka and my music machete. And you don't know what I'm going to come at you with.
Jack: We're in the dark ages if J-Lo can have a music career because of her ass. And let's face it, that's it.
Jack: Don't be celebrities, because then you go cuckoo for Cocoa Puffs. You don't want that, do you?
Jack: Never for a second did I think of myself as the sexiest guy in the world. When I was a kid, I thought I was the strongest man in the world. Then, the fastest runner and then the smartest person in the world. One by one my delusions got shut down. Now I just see myself as the lamest guy in the world.
Jack: I had a bit of a lost weekend while we were doing King Kong. Overall I'm very responsible on set. I'm not one of those dudes who come drunk to the set.
Jack: There's nothing you can really do to prepare to rock. Do you prepare to eat a delicious meal? Are you hungry? Then you're gonna eat it.
Jack: (revealing his privates were hurt after a run-in with wrestlers on the set of 'Nacho Libre') I had a good experience with Satan's Cavemen - the wrestlers who came up to my navel. They were tremendous athletes, too, and they kicked my arse good. They flung me around like a rag doll. They punctured my privates, but for the good of the film.
Jack: (prior to hosting the 2006 MTV Music Video Awards) Prepare yourself for a rip-snortin' humdinger.
Jack: I'd rather be the king of kids, than the prince of fools.
Jack: If Beethoven and Bach hooked up with Mozart and made a band, they could be a distant runner up to The D.
Jack: (on offers for photographs from magazines) We do have some offers from some major magazines. Popular Mechanics was talking about something. To tell you the truth, I'm a little insulted, 'cause nobody cares about my sweet baby. The market is flooded. Nobody cares about Baby Black!
Jack: Does spandex come in a size? I am probably an XL, but I went with a medium just to really suction-cup it all together.
Jack (on fatherhood): I'm already having headaches like, Where is he going to go to pre-school? Am I gonna put cameras in every room of my house to spy on the babysitters to make sure that they don't shake the baby? I started watching TV shows that scare me a little bit. I love video games, but then yesterday I was reading about how they can be addictive and kids shouldn't play with them.
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