My beloved Bears are playing like, well... my beloved Bears. Solid D-line, solid LB's, and an absolutely terrible secondary. Couple that with a blubbering tw*t of a QB, and we're all set!
I'd have to say the Lions and Colts are the surprises of the season for me; I knew the Lions would be decent, but didn't see this start. We all knew Payton Manning carried the Colts, but they look absolutely headless without him.