I think a couple of teams that might surprsie the league are Green Bay and Baltimore.
I think the Ravens will do well this season because not only do they already have a great defense, but they got Boldin and Stallworth during the off-season. This gives Flacco more options. As for GB, Rodgers has arguably become one of the best QB in the league.
As for the Super Bowl, I am guessing the AFC finals being the Colts and Ravens, and NFC finals being the Packers and Saints.