2006 Colts. The SB was special obviously but I'll never forget the AFCCG win against the Pats. I can remember like it was yesterday watching that ball fly out or Reggie's hands and then slowly fall back as he caught it. I remember prior to that when we were so far down in points and the cameras panned around the stadium showing the depressed faces of Colts fans. I could feel their pain. Contrast that to the absolute bedlam when we won. No game will ever be more special to me than that one.
Non-Colts: a tie between the 2003 Carolina Panthers / 2007 Giants Both teams faced the Pats in the SB in the years mentioned. Both games were exciting to watch. In 2003, the Panthers fought and clawed their way all season and into the playoffs. The previous year they had 2 wins I believe. The NFC Divisional game against the Rams and the NFCCG against the Eagles (triple OT) were really exciting.