On Monday night, Mel Gibson appeared on the "Tonight Show" and fessed up to Jay Leno that his girlfriend, Russian singer Oksana Grigorieva, is preggers. Since this will be Mel's eighth kid, he took the opportunity to jump on the tabloid bandwagon, dubbing himself "Octo-Mel." We think Mel's a bit of an Octo-Moron because, really folks, what self-respecting person wants to be associated with Nadya Suleman? But, interestingly, it seems that many celebrities are smitten with numero ocho. Check out our favorite Octo-Stars, who should probably copyright their monikers right now.