Snow skiing, holy shit I've probably been in more pain from doing it this year then I have...well in a while.
My family has an old (I mean like...holyshitold) boat so during the summer I water ski and wakeboard and all that stuff. I used to play basketball, which is where I felt as much pain as I do when I ski. I have this thing a bout pushing myself sometimes...
Running, that's always fun, uhm, stairs, if those are different then running.
Just walking, alone or with people.
I used to be a biker, dirt (pedal) bikes and all that, but after a change of scenery it's no longer viable.