10 Best Performances In Buffy The Vampire Slayer

10. Adam Busch - Warren Mears

This may seem an odd starting point, but put away your feelings for Season Six for a second and think back to just how much you hated the arrogant, slimy, misogynist that was Warren Mears. A lot, right? Of course a lot; he killed Tara, assaulted and then killed his ex-girlfriend, and tried (repeatedly and without remorse) to kill Buffy and her friends.

Warren, simply put, is the worst Buffy has to offer, since he is just a guy. There's nothing demonic about him, he's not possessed, he has a soul. Maybe. And yet watching Adam Busch is a revelation. He carries Warren through everything, from bursts of anger, nerdy goofiness and pitiful begging. Sure, he starts off relatively annoying - more of a nuisance than a real threat - but as the season builds he grows from pathetic and useless to cold and evil in a blink.

Think about it: He's able to pull off a line as funny as "We're your arch-nemesiseses" and then kill a main character (and nearly Buffy) with no shed of empathy. One minute, you're laughing. The next, your cursing at the TV. In other words, Adam Busch nailed it.