If you think that the crazy glasses that he wears are nuts, then you should definitely take a look at his aggressive style, because to be honest, he is one of the most aggressive players at the table usually.  His nickname is the Fossilman and the reason for that is because he very, very rarely pulls out and folds.

So if you are sitting in the middle of a game with Greg Raymer, you should be prepared to sit in for the long hull because he is definitely not going to pull out at all!