Although he is the first to admit that much of his success is due to his longtime friendship with writer/director/producer J.J. Abrams — who cast Grunberg in plum roles on Felicity and Alias — this lovable schlub is no slouch on his own. After studying business in college, Grunberg founded a successful frozen-yogurt business and assisted film producers Dino De Laurentiis and Joel Silver before segueing into acting. The quintessential average joe, he quickly landed TV guest spots, small film roles and a number of commercials, often portraying blue-collar guys. But his kindergarten pal Abrams lifted him out of the ranks of no-name players by writing him a role as a sarcastic inventor on Felicity. 2001 found Grunberg briefly appearing on two Abrams shows simultaneously, when he took on a recurring part as a CIA field agent on Alias in addition to his Felicity duties. Although TV remained his primary medium, he popped up in small film roles, notably the Abrams' directed Mission: Impossible III. But despite all the help he got from his friend, in 2006 Grunberg snagged his highest-profile role to date all by himself, as a hapless cop who can read minds on Heroes.