Buffalo Bills: I'm from Montreal, so they were as close as it got for the NFL. Their four Super Bowl appearences and their great players in those days (Kelly, Thomas, Reed) made me a fan and to this day I still am.
Expos/Nationals: This goes back to the '94 season, where everyone in Montreal fell in love with the team, and I was no exception. I stuck with them to the end and will continue to cheer even if they're in D.C.
Detroit Red Wings: They had awesome talent in the mid 90's, plus my favorite player (Steve Yzerman) is on the Wings so that clinches it.