Hmm, a few random ones in no particular order:
Become completely proficient in at least 4 languages (probably: English, Spanish, French, German)
Tour Europe and the Orient
Write a novel
Raise happy, well-adjusted children (2 or 3)
Make enough money to quit working and spend my days with my hobbies and interests.
Become a gay activist
Build a snowman
learn a few musical instruments
never stop learning
This is by no means an exhaustive list, but it's a decent start I suppose. Of the things other people have mentioned (that didn't make my list in their own right) I'd also like to:
* Go sky diving
* Go bungee jumping
* Go mountain climbing (Not Everest or anything like that... just a normal mountain yep)
* Go scuba diving
* Learn to bartend
*Get married
*Find happiness and keep it
*win a spelling bee
*Organize my funeral (and wedding)
*Hot Air Balloon Ride