Off the top of my head I can name Paul Walker, Keanu Reeves, Channing Tatum, Vin Diesel. As bad as Paul Walker is I still find a way to easily tolerate him in most movies.
I like Keanu for some reason. Hell, I even like Ashton Kutcher. I can't stand Orlando Bloom. Maybe it's because the role of Paris fit him so well.
I watched GI Joe yesterday and besides the fact that it was a shitty movie -- Tatum just made it far worse. The guy just can't act. He mumbles all his lines, and is clearly unable to show any emotion.
Definitely Tommy Wiseau of "The Room" [video=youtube;mQ4KzClb1C4]http://www.youtube.com/watch?v=mQ4KzClb1C4[/video]
I recently read a book called Showgirls, Teen Wolves, and Astro Zombies. It's about a critic's year long search for the worst movie ever made. The movie "The Room" was one of the worst. He points out though that the only redeeming quality to the film is how hilariously bad Wiseau's(who was also the director) acting was.
OMG. Pure GOLD. [video=youtube;LR1oG8-JajM]http://www.youtube.com/watch?v=LR1oG8-JajM&feature=related[/video]
Meh, The Room is old news! [video=youtube;YGpwxHMUndk]http://www.youtube.com/watch?v=YGpwxHMUndk[/video] His new sitcom!