I submitted my "Double-A Data Logger" to Atmel's "Simply AVR" design contest. Check it out; if you like it, I will certainly appreciate a vote.
I can't seem to figure out a direct URL, so go to http://app.snapapp.com/simplyavrcontest, then click VOTE in the upper right. My entry is first on the page right now, but I think it will move as new ones come in.
I'm glad to have any feedback on the project too, whether or not you vote. Thanks!