1) Last year I made this LJ post requesting that, in lieu of getting me something, people make a donation to Charity: Water. That request stands. On the scale of doing the most good for the most people per dollar spent, I still have yet to find a charitable organization the beats them. A new game for the Wii vs helping our fellow humans obtain a basic necessity of life for decades to come? No comparison.
2) However, if you're gonna buy me sumptin', I have an Amazon wishlist that, while not exhaustive, is up to date.
3) I also have Think Geek wishlist for my more propeller-headed desires.
4) Beyond that (or really, above that), the thing I want most is time spent with friends and loved ones. Seriously. (Preferably naked. ;-) )