It says more about age (or insanity) than anything else, but I've done 66 of them. I've never skied in the US east of the Mississippi, so that rules out quite a few. I'll be going to the Olympics this winter, so that should add one more.
Some remaining ones that I really want to do before I cash in:
# 62 Ski across a border. I've racked my brain and can't come up with one I've crossed.
# 66 Ski serious California corn. This spring perhaps. (I could go to Heavenly and ski CA/NV, thereby crossing a border?)
# 74 Tuckerman's. (I've done Little Tuckerman's in the Jackson Hole backcountry, but I don't suppose that counts.)
# 75 Southern Hemisphere. A serious failing on my part.
# 86 Haut Route. Possibly in 2004. (Another border opportunity.)
# 94 Arctic Circle. I *really* want to do this one.
# 95 Find and read "Ski Party". I hesitate to admit this, but I have no idea what "Ski Party" is. Can anyone help me out?
# 99 Ski area patch. The area where I sort of "grew up" skiing went out of business a long time ago
Most of the rest I'm not likely to ever do. That would only get me to a bit over 70%. That's close to a failing grade in most classes.