As of Summer 2008, Justin has been dating actress Kirsten Dunst.
Playing a computer geek/hacker, Justin's most difficult line in the movie Live Free or Die Hard was "mutating encryption algorithm."
Justin grew up in a conservative Catholic family and his parents were strict about the movies they watched.
Growing up, Justin wanted to be a professional football player. It was in high school when he realized that with his small frame and inadequate height, his dream wasn't going to materialize.
As a child, Justin idolized John Cusack, Matthew Broderick, and Michael J. Fox. It came to a point that he was so obsessed with Fox that he naturally picked up most of his mannerisms and hand gestures.
Justin admits that the reason he went into acting was because he thought it was a great way to meet girls in high school. He had read in an interview that Philip Seymour Hoffman had the same reason too, and that made him feel better.
Justin did a TV commercial for Pepsi Vanilla in 2003.
Justin read for the Stephen King's audiobook "Everything's Eventual: Five Dark Tales."
Justin's theatrical credits include The Hot L Baltimore, The 24 Hour Plays, Barefoot in Athens, Final Exam, and The Shadowbox.
As of 2007, Justin has received two Saturn Award nominations -- one for Jeepers Creepers and another for Galaxy Quest. That same year, Justin also received a Teen Choice Award nomination for "Choice Movie: Breakout Male" for his role in Accepted.
After dating for 10 months since 2007, Justin and Drew Barrymore broke up in Summer of 2008. Justin was supposed to appear in her directorial debut, Whip It but backed out citing he was still upset with the break-up.
In the final scene of the movie Jeepers Creepers, the role of The Creeper (usually played by Jonathan Breck) is played by Justin, who plays Darry Jenner. Justin also played The Creeper in the alternate ending, which can be seen on the DVD.
Justin lives in New York City when he is not filming on location.
Justin was in the movie The Break-Up, which premiered on his birthday.
Justin's mother Wendy Lesniak is a stage actress who also teaches at Roger Ludlowe Middle School in Fairfield, Connecticut.
At his senior year at Fairfield Prep, Justin was named the "Most likely not to be seen in class".
Justin was a member of "LaughingStock", a skit comedy group at Vassar College. He appeared in two independent films, Boygazm! and Time Writer, before appearing in his first commercial film, Galaxy Quest, in 1999.
Justin was named one of People magazine's hottest bachelors of 2006. He was also named among Entertainment Weekly's "30 Under 30: The Actors" List of 2008.
Justin has one dog named Moose.
He has a older brother, Damien Long who is an actor. He also has a younger brother, Christian Long who is also a actor.
His father R. James teaches philosophy at Fairfield University. and his mother Wendy is a stage actress who teaches at Roger Ludlowe Middle School, in Fairfield
He is 5'9" (1.75 m).
In May of 2006, Justin Long co-starred with John Hodgman in a new ad campaign for Apple computers.
Justin Long: My idea of acting was working in the theater. So I am very grateful for all my jobs. I know that at the moment there is a bit of a window of opportunity for me to make smart choices. I have been very lucky so far and really happy that I have had the chance to work on interesting films, but I still always feel that every job is going to be my last.
Justin Long: I knew I could be funny and make people laugh. And at school I was always the class clown. We would often get into fake fights and I could really take a punch and I would hurl my body over chairs and desks, I could throw my body around for some reason and take a lot of pain.
Justin Long: I was actually alone in my apartment. I only got half way through it, I couldn't finish it, because reading it, the script was terrifying.
Justin Long: I waited tables for about a year; I was terrible at it, ... The only thing that I could have done to be a worse waiter would be to actually have like peed in front of people, like on them while they were trying to eat. It was at that level.
Justin Long: I get the worst of both worlds. I look like a geeky hacker, but I don't know anything about computers.
Justin Long: I can truly say that yeah, I was hoping that it would be (R-rated) and was kind of very apprehensive about doing it when I found out it wasn't.
Justin Long: I was struggling with the decision to do these Mac commercials, because I didn't want to be a sellout... but I was talking to a friend about it, and he goes, "Who are you, Johnny Depp? What are you selling out? Herbie: Fully Loaded?"
Justin Long: (on his character on "Ed") Warren Cheswick is sort of the extreme of how I felt in high school. He's awkward, but instead of accepting it, he tries to counter it, which makes him look even worse.
Justin Long: I have such thin skin, so I make a concerted effort to avoid reading anything about myself.
Justin Long: I can tell you this for sure, it was when I played baseball in high school and I was in the outfield and I would literally pray to God - I'm not joking, I'd pray to God not to let the ball come to me. I was so bad, I was just terrible. I played soccer - I was the goalie. I would pray to God it didn't get kicked anywhere near me. I was an awful athlete.
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