Urban Retro Lifestyle has a very cool top 10 list of retro cartoon birthday cakes - this one is the Bugs Bunny Birthday Cake from Clare Wood's Ekka photoset [flickr]
Check out the rest of Urban Retro's list: http://www.urbanretrolifestyle.com/2007/03/08/top-10-retro-cartoon-birthday-cakes/ - Thanks Tahir!
The winning "Bird of Paradise Flower" cake definitely blew everything else right out of the water, though. Wonderful work!
--TwoDragons