A pet panda... so far it walks around randomly, you can feed it and it "goes to the bathroom"
http://ogreish-the-game.com/Unity/panda.html
I've turned it into flash... it runs from my site now. (note flash is crap so it takes awhile to load and is SLLLLOOOOWWW!! but I cant access ftp at the moment for the site so can't upload native untiy3d file.)