Really like all three doctors since 2005. Tenant really brought great emotion to the role, though I didn't really care for his companions cept Donna. Smith brought back a bit more of the alien/weird side of the doctor and he has great chemistry with his support. Got to love Rory as a brilliant foil to the doctor. River Song's fully capable of matching the doctor in cockiness, no to mention Alex Kingston's silky voice...
Some new and creepy villains as well, the silence, the weeping angels, the Vashta Nerada, the Toclafane. I'm really looking forward to the new season.