What a neat thread.
Rock Climbing - did that when I was younger, but not as strong as I am now. I never trusted the equipment enough and would always get "sewing-machine-legs" at a certain height.
High gliding - Anne, my DH and did this at Kitty Hawk about 10 years ago and loved it.
Fencing - again, something I did when I was younger, in college. I did enjoy it.
White Water Rafting - loved this, but was scared most of the time.
Therapeutic Horseback Riding - Maeghan, my son was involved in this when he was younger and it was great. It was funded through a local agency of some sort.
I'd love to go kayaking in the Sea of Cortez and hope to do that in the next 2-3 years. Surfing looks like a lot of fun, but I don't know if my knees would let me get to my feet. DH and I have always wanted to hike in the Grand Canyon. We used to backpack alot before kids, and the Appalachian Trail has always been a dream of mine. Finally, I'm with AJock in wanting to get to a Cathe Road trip and meet all you wonderful woman.