riding my jetskis (standup mostly) on the surf with big waves
ATV'ing but only really in the sand and dunes
on epic days all of them are about the same but powder days just beat the others by a little bit. And I usually ski more than I can do either of those.
Kayaking is a close second to skiing, but it's apples and oranges really. I've been addicted to skiing for way to long for it to ever lose the #1 sport spot in my life though.