A good drummer makes you stop and really listen because what he's doing makes you think. It doesn't have to be complicated either it just has to be right for the music. Everybody is going to have a different opinion, so it really boils down to whoever catches your ear and inspires you.
Listen to Vinnie, lots of Vinnie, and take notes.
A good drummer is one that can take criticism, helpful hints without thinking they are to good for the advice, and to try it. They learn from their mistakes. And they don't have a big head about their drumming. Key word: Humble
Another is being creative. Making their own grooves, songs, style. To mix all the genres, and make a different groove with it. That's what catches my ear.
You gatta be smooth with your mistakes too.
[These things I am just starting to learn]