1. Lebron - I'm sorry, but a guy as talented as he is should not be constantly flopping, and acting like he got shot anytime someone looks at him to wrong way. He does not carry himself like a winner IMO. It's one thing for a guy less talented guy to do it, but when you are by far the most physically gifted player in the league, you should not be doing that stuff. He really needs to grow up a lot before he should be mentioned with the great competitors in NBA history.
2. Lamar Odom - A total punk. I can't count the number of times he has made completely dirty plays when his team was out of the game. And he isn't just making hard fouls to send a message (which I am OK with), he is making dirty plays, trying to injure guys, and hit them when they aren't looking.
3. Rip Hamilton. He picked up where Reggie Miller (one of my least favorites of all time) left off, being one of the most subtle dirty players in the game. I would probably love him if he were on the C's (like Miller), but since he isn't, I can't stand him.
I actually have a decent amount of respect for Kobe on the floor (not so much off the floor), because he absolutely is one of the best competitors in the history of the league, and really cares about winning.
I also have no problem with Vujacic, who is a pest, and a flopper...but unlike guys like Lebron, who would still be just as good, if not better if he didn't flop, and actually played real defense consistently, Vujacic is using the NBA's rules to his advantage, and making a decent career out of it. I respect that at least a little.
