Not in any particular order, depending on my mood at the time:
Music: listening, writing it, playing it, anything music!
Sports: Soccer, hockey, skiing, snowboarding
Gaming (winter sport): FarCry (4 is on it's way!)
Technology: I work in technology because it was a hobby that turned into a paying gig, still love it 25 years later!
Outdoors: Fishing, camping, hiking