At the age of 19, he auditioned for a role in Top Gun. Director Tony Scott was so impressed that he wrote the part of "Chipper" just for him. This led to bigger roles in Solarbabies (1986), Streets of Gold (1986), and Kathryn Bigelow's 1987 cult vampire movie Near Dark (1987), with Pasdar in the lead role of Caleb Colton. Other major roles include Vital Signs (1990). Pasdar got his biggest break in in movies, when he starred as a beautiful woman opposite Julie Walters in the Brtish movie Just Like A Woman. In 1992, he left Hollywood and returned to New York, working as a cashier for room and board, while taking the occasional small part, such as Frankie in Brian De Palma's Carlito's Way (1993).
Adrian Pasdar wrote and directed the short film Beyond Belief and directed his first feature film, the art-house neo-noir Cement, a contemporary re-telling of Othello, in 1999. The $1.7 million independent feature, which won Best Picture awards on the festival circuit, starred Chris Penn, Jeffrey Wright, Sherilyn Fenn, Henry Czerny and was written by Farscape's screenwriter Justin Monjo.
Pasdar's major break into television came in 1996, when he was cast as the title character on the short-lived Fox series Profit. From 2000 to 2002, Pasdar played the lead role of Anthropology Professor Declan Dunn in the spooky cult drama series Mysterious Ways on PAX.
Pasdar played David McClaren in the final two seasons of the long-running CBS drama Judging Amy, from 2003 through 2005. In 2006, he had a high-profile guest role as Gabrielle Solis's sleazy lawyer in Desperate Housewives.
He currently stars in the NBC superhero drama Heroes as Nathan Petrelli. He bases his mysterious character on "the most morally liquid characters" that he's encountered in his life. The character is not based on one particular political figure, but on a conglomerate of different ones, both good and bad.
Pasdar frequently posts videos of his Heroes co-stars on the video-sharing site YouTube under the username "buckshotwon."
Adrian play nathan Petrelli on Heroes and he is a great character he plays a character you can never trust on the show, I think Adrian fashion is terrible though but that is one of the things i like about him.