Playing Hiro Nakamura on Heroes has been a breakout role for Masi Oka, who previously had a few small appearances in comedies like Scrubs (pictured) and The Sarah Silverman Show. But before he became the comic-book-obsessed Nakamura, Oka helped make behind-the-scenes magic happen as a visual effects specialist on blockbusters like Pirates of the Caribbean: Dead Man's Chest, the Star Wars trilogy, and, perhaps most fittingly, the Marvel-inspired Hulk. Whether he ''does his own special effects'' for Heroes in the same way that Jet Li ''does his own stunts'' is unclear. Probably not, but his Heroes character is a computer whiz with a knack for manipulating the space-time continuum. Art imitates life...unless that ''art'' is Terminator 3, another of Oka's special effects credits.