Jiraiya is my favorite. Other than the fact that he is one of the legendary Sannin, he is quite hilarious. Nothing like a perverted hermit to lighten up the day. His facial expression gets to me every time. Thats why I had this sig made for me.
My second favorite character is Shikamaru. He is the genius and the way he thinks is truly beyond his peers. I think he would be formidable opponent in a game of chess.