I personally like Tennessee Titans, Sacramento Kings, and the Boston Red Sox. I guess it might having something to do with them being big time underdogs, but I've liked them since '99, after my craze with Michael Jordan (Kings).
I like the Red Sox because I live in the New England Area.
I also like Tennessee Titans, because I always used to flip-flop back and forth with teams when I was little, and I admire Jeff Fisher's coaching talent. Also the games, they are more exciting than any others, I just can't describe it. Steve McNair definitely made me a fan though. But yeah, this was about a year or two before they went to the Super Bowl.