I spent an ideal Saturday night with a beautiful woman and a lot of beautiful bikes at Minnecycle 2010, a handmade bike show for Minneapolis' suprisingly large number of frame builders. I forgot my camera, so there's no way to prove to you the existence of the aforementioned woman. However, I can show you this (courtesy of fontosaurus's flikr stream):
Bob Brown 29'er Belt Drive SS
 
A little blurry, but you can see that Mr. Bob Brown has inserted machined couplers into his dropout and seatstay. There's a single M5 bolt that connects the two. I hadn't seen a belt-drive solution like this before (and was about 3 free beers deep) so I was ranting and raving about it to everyone I knew. Smart, clean, strong. Two thumbs up.