I think that my favorite, at this point, is Jon Pertwee. I thought that David Tenant did a great job, but his tenure was marred by awful plot from an awful producer. I also liked Christopher Eccleston, although I may be in the minority, there.
my fave doctor (sorry to all the purists) is the tenth, david tennant just did it for me, the ninth doctor was meh to me.
Yeah, Rory is pretty great.
the eleventh is not dissapointing me at all, he's pretty decent, it helps that his companion is a total FOX!
Sam, the Neon Orange Knight