Gotta be.
College Football - Pretty much the only thing that can sit me on my ass all day long regardless of who is playing.
MLB - I (sadly, at times) watch or listen to nearly every Royals game. though not always/ usually the entire game. Love MLB playoffs. Addicted to MLB network.
College Basketball - though I love the bball cats just as much as the Royals. Obviously the Big Dance is great and better when the Cats are involved. Love P66 big 12 saturday's.
NBA - Really like the playoffs, don't care for the regular season except for certain match-ups.
NFL - I just can't really get into it. The games are fine, but everything else that surround the NFL is a major turnoff fanwise. A prime example is the overcoverage and also fantasy football fellation etc.
Other sports don't really register to me (golf, hockey, etc) or aren't going on often enough (world cup, olympics) to really be in this category.