Baseball seems to be far and away the worst sport for "if my team ain't playin', I ain't watchin'."
I'm a Leafs fan, but also a hockey fan. Certainly I have favorites - Toronto and whoever is playing Boston - but for any game I'll have a team to root for. Canadian teams (except Ottawa), O6 teams (except Boston), and underdogs generally get preference.
Mostly I just like a good game. I think I have an advantage over a lot of people, in that I appreciate good defensive plays at least as well as good offensive plays. As long as it's not too lopsided or too goonish, I'm happy.