Actually the one I hear spread around on the Tampa message board is that no one has ever lost to Tampa and then won the Superbowl the same season. Haven't researched it or given it much thought untill just now.
This one ↑ is actually true. Not sure if it includes preseason, but the Patriots did lose to the Bucs last year in preseason.
Well, Atlanta just lost, so the Panthers are the last representative of the NFC South. I will be rooting for you guys!