Adrian was raised by his mother, Karesse Grenier, who was a real-estate agent. Growing up, he didn't know who his father was - his parents met while living in a commune, and split up soon after his birth. The documentary Shot in the Dark covers Adrian's search to find out who his father was and get to know him.
Adrian is an accomplished pianist, guitarist and drummer. He was once the drummer for the band 'The Honey Brothers' and the lead singer of the band 'Kid Friendly.'
Adrian was nominated in 2008 for a SAG Award along with his Entourage castmates for Outstanding Performance by an Ensemble in a Comedy Series.
Adrian announced in July 2007 that he and Sports Illustrated swimsuit model Melissa Keller have been dating for two years. Previously, he had briefly dated Melissa Joan Hart during the making of Drive Me Crazy.
According to Adrian, the worst thing he has ever done is convince two girls to give him twenty dollars. He feels so bad about it because they just vulnerably handed the money over to him.
Adrian has previously revealed that the best date he has ever been on was when he went to Cirque du Soleil with his girlfriend and her daughter.
Adrian has his own production company, Reckless Productions.
According to Adrian, the person he would most like to meet is God to give him a piece of his mind.
Adrian's favorite books include Heart of Darkness, Lolita, Fennegan's Wake, The Trial and the Dictionary. And his favorite TV show is The Simpsons.
Adrian has worked under Woody Allen twice: in Anything Else and Celebrity.
Adrian attended Bard College. He later attended the Fieldston Summer Performing Arts Institute.
Adrian is the cousin of actor Evan Ferrante.
In 2001 Adrian was named Nylon Magazine's "Future John Travolta" in 2001.
Adrian ran the 1999 Boston Marathon.
Adrian wrote and directed a documentary called Shot In The Dark.
Adrian hobbies include baseball and to dumpster dive. He also loves to gamble - he says he goes to the casino with his grandmother!
Adrian knows how to play the piano, French horn, guitar, and the drums. His favorite music includes Sonic Youth and Montreal.
Adrian was in a band called 'Safe Transmissions'. He also was the lead vocal for the band 'Kid Friendly'. Adrian is in yet another band called 'The Honey Brothers'. His stage name is Honey DuContra and he would love to be a musical guest on Saturday Night Live.
Adrian speaks German and French. He also spent three years living in Japan. His last name is French for attic.
Adrian's height is 5'10". He has dark brown hair and blue eyes. He describes himself as sensitive and full of love.
Adrian: I'm pretty laid back, and I don't take success too seriously.
Adrian: (asked if he's a commitment-phobe like his "Entourage" character, Vince) I like to live vicariously through Vince. I remember shooting a pool scene with girls and I took a step back and went, 'Wow, this is what it's going to be like for the next several years'. But Vince hasn't had as much success with women as he should have on the show. I live through Vince.
Adrian: (one of the craziest experiences he's had while partying) I think the craziest story I have is when I was at a bar getting a drink and this woman came up to me and said, 'Me and my daughter are the biggest fans of your show. We watch it every Sunday'. And I was like, 'Oh, thank you very much. Give my best to your daughter. See you later'. And she said, 'Oh, if you saw my daughter you'd want to give her your best'. I was like, 'Whoa, okay!' People get weird for sure when it comes to celebrities and their daughters.
Adrian: (The Honey Brothers) are the masters of Appalachian glam rock, according to the Village Voice. We're coming out with an album, so we'll be out promoting it.
Adrian: I'm one with New York and New York is one with me. I grew up there; there's no escaping it. We're like Siamese twins, if you separate us, I'll die.