Off the top of my head:
My mini-maglite does. Same with both TV remotes, the Wii remotes, the remote for the tower fan, any number* of the kids' toys, the external flash for my camera, the display on some of the wife's gym equipment, the furnace thermostat, my portable shaver (not that I ever use it), the built-in light for my pillar drill...
- never ever buy one of those laser-tag things for the kids. 4 guns, 6 AAs in each...
I think my stud detector widget might use AAs, too (although that might be a 9V), but it's over in a different building right now, it's snowing outside, and I can't be bothered to go and check ;-)
I'm sure there's other stuff I haven't thought of (some stick-on closet lights did, but they were utter crap so I fixed 'em with a big 'ammer :-)
cheers
Jules