Greg Grunberg is an American actor. He began his career appearing in experimental music videos, short films, and commercial spoofs directed by childhood friend J.J. Abrams during his early teens. Grunberg has appeared in films such as Big Ass Spider!, Hollow Man, and Paterno alongside Al Pacino. He is also known for his roles in the television series Felicity and Heroes. He has since transitioned into producing, working on the film Max Reload and the Nether Blasters and the documentary series Charlie Hustle & The Matter of Pete Rose.