Any professional sports. Even sports I like to play. I just don't get why it matters. You have no real connection to the team and their success doesn't affect you in any real way. Watching other people play sports is like watching other people eat food.
Also the Olympics. I just don't give a fuck about the Olympics. I live pretty close to Vancouver and I can't go a few hours without hearing or reading some shit about the Olympics. They suck, they ruin TV by showing crap lousy curling when my stories are on.
The Olympics are also mildy racist if you think about it.