NHL - Flyers. I'm a Penguins fan, so I hate everything about the Flyers. Closely behind are the Red Wings, Rangers, Islanders and Capitals.
NCAA - Wisconsin. Don't think it needs explained. I hate their football and basketball teams, I hate the fans I've encountered. I feel more hatred toward them than I do Michigan right now.
Specifically for basketball, I hate UNC. Why the fuck are there so many UNC fans in Ohio? Oh, I know. Nevermind. I do have a lot of respect for Roy Williams, however, and I really don't have a problem with their teams. Their "fans" I see all over the place are what causes me to hate them.
NFL - I'll go with the Cowboys, but it could easily be Oakland or the NY Giants. I grew up as a big 49ers fan during the 90s, so I hated the Cowboys.
NBA - Heat. Used to be the Pistons, but Lebron has made me like every team except the Heat.
MLB - Boston Red Sox. I love how many Red Sox fans popped up out of nowhere in Ohio (and everywhere else) when they got good. And I also love when those same people bitch about the Yankees spending money for free agents. It was the Tigers before the Red Sox though.
Two stories about why I hate the Sox and UNC because of their fans. Saw a dude with a UNC shirt on, we were talking about basketball. Somehow got to talking about Michael Jordan, but not because of his days at UNC. He had no idea he even went to UNC.
Asked a Red Sox fan who her all-time favorite Red Sox player was. She said fucking Joe Dimaggio. I don't even understand.