I think overall, right now, the Undertaker and Jeff Hardy have the best standing in terms of finishers. This isn't saying that they're the best moves, though. Its just that they both have 3 moves that could count as a legitimate end to the match: Tombstone/Chokeslam/Triangle Choke....Swanton Bomb/Twist of Fate/Whisper in the Wind. That's how I think all wrestlers should try to aim for, having one signature move (Tombstone/Swanton), one set-up (Chokeslam/ToF), and one move for submission (Triangle Choke...Whisper obviously doesn't count here).
That being said:
1. CM Punk - He needs to use the Anaconda Vice again. Too much focus on the GTS.
2. Santino Marella - Actually, he needs a finisher, PERIOD. The guy doesn't have one. I think it would suit his character if it was something quick and definitely not devastating, even if it just means some sort of a distinguished roll-up maneuver, SOMETHING.
3. JBL - This guy bores the crap out of me in the ring and his finish follows the same schedule. A clothesline? Come on. Go back to the 70s where the Hogan leg-drop was acceptable.
4. Mr. Kennedy - The Green Bay Plunge looked like it could've been a nice set-up move. The Mic Check...eh, its ok. I'd like it better if Shelton wasn't doing something close to it already. Yeah, I know, its not the same move, but its close and has the same impact.
5. Cody Rhodes - I still think he needs to upgrade his DDT somehow.
6. Kane - I've just never liked the idea that his finisher is the secondary move for the Undertaker. It makes it seem like in all these years, he couldn't think of anything on his own. I wouldn't mind if it was a chokebomb instead of just a chokeslam, though.
People are pretty much saying the same stuff that I'd be saying, so I'm just gonna leave it at those. No use going over MVP and Edge and stuff again.