OK, gotta admit, this one's got me a little excited, probably because I've been playing with iPhone apps so much lately. On the iPhone (and some dashboard widget apps) there's a cool effect where you can "turn over" something you're looking at, which shows you what looks like the "other side" of it. A good example is looking at an image and then flipping it over to see picture info (date taken, etc). I've seen this effect used very well on a few web sites lately, too. Anyway, the jquery Flip! plugin:

http://lab.smashup.it/flip/

I've tested this in IE6 and it worked, FWIW. The author says it would, but I'm a bit paranoid (kicked enough times by that piece of merde). I'd like to see some more clear examples there of using the "content" option, which to me is what makes the use case something more than just a neat effect.

Anyway, this is kinda cool, IMO. Maybe "flip will be the next reflection", which was um, "the next rounded corners", which was um... the next Windows Playskool UI, no, wait, no... yes.