Classiest player- Bret Favre. Over the years he has played with all his heart, through injuries, family tragedies, and has always kept his composure. On the field he never talks trash or acts like a big baby. I have been a fan since the early 90's for these very reasons.
Peyton Manning is proving to be very classy IMO during this dominating season for the Colts.
Elway- never liked the Broncos, but can't help but like the guy.
Least classy- The entire Vikings team. Even before this last utterly dispicable incident they were involved in, they have been punks. The fans even for the most part are rude, which I have experienced first-hand.
Vikings fans aren't even the worst in the NFC. Ask Michael Irvin. Or Santa Claus (or was that during a Phillies game?).:)