I like to watch different players for different reasons. I love to watch Efren because he is so skillful. I also like to watch him to just marvel at his demeanor at the table. It just cracks me up when he makes a mistake, and that's hardly ever, because he just chuckles and shakes his head. Quite a guy!
I like to watch Kieth because he is good and he's entertaining as Hell! Whether Kieth is winning or losing, he puts on a great show. And, when he's really on top of his game, he's awesome to watch!
Bucktooth provides quite a show too. He's got more hustle in him than any two players you could find! You can really learn something from watching him!
Besides those guys, anyone that I can learn something from. Also, I have to agree with the Gremlin, those women are sure nice to watch too. You can learn something about pool and treat your eyes to lovliness at the same time; not a bad deal when you think about it!