7. Paul Walker
Worst Performances: She's All That (1999), Timeline (2003), Into The Blue (2005), Fast & Furious (2009), Takers (2010)
The Fast & The Furious movies aren't exactly high art, but that's no excuse for Paul Walker to act badly. He makes Vin Diesel, who's also on this list, look like a master thespian—at least Diesel's dull tough guy act fits his uninteresting character. Walker, however, should be his spunky opposite, yet he's even drearier. Even outside of the automotive franchise, his dramatic scenes play like the worst takes from a surfer dude who's accidentally stumbled into an acting class.