Mine too. I become borderline obsessive during the 2 or so months that are the playoffs. During the regular season I only really watch my own two teams, but I might check out a random other game if I'm bored one night or it's late in the season. Come playoff time, I'm in for the long haul and watch every game possible.
My obsession was even "worse" (or "stronger" if you prefer a more neutral intensifier) when I still lived in Arizona and was deeply involved in the local hockey community there (as both a player and an official). My entire life revolved around hockey, especially since for a couple years I was making enough money as an official that I didn't have a separate job.