I hope you guys dont all come down on me for this, but this site is the only place I've run into where Santana seems to be over-rated. I know lots of guitar players at school who like his playing, and I've never had this discussion on another web site.
He may not be fast or play any actual rhythm, but I've always thought he had a really soulful, spiritual style. If Santana didn't play the way he does, no one would buy his stuff, I think anyway.
And I get the whole overrated thing that u10ajf said. My dad really digs Clapton and Santana and guys like that, always saying they were the best. They are good, but I think there are better song writers and players out there than that.