SETH NORRIS (GREG GRUNBERG)
When: Season 1, episode 1, ''Pilot — Part 1''
How: The pilot never made it past the pilot. After working with J.J. Abrams on Felicity and Alias, Greg Grunberg showed up in a cameo role on Lost as the man at the helm of doomed Oceanic Flight 815. While originally surviving the crash, Norris had the very dubious honor of being the show's first victim of the then-unseen Smoke Monster, his body found mangled in a tree. —Keith Staskiewicz