Over at the Excess Gaming website, they've got a pretty amazing collection of Sega logo anims from Genesis titles - all painstakingly captured into animated GIF form, presumably by running an emulator over the original ROMs.

Interestingly, the above linked page is just 'Vol.3' of a gigantic set all housed in the Special Sega Projects section, and some of our favorite anims include the obvious (yay, Earthworm Jim 2), the extremely obvious (Vectorman, and the crazed (uhh, a death metal zipper for Devilish?)

Also, the other 'Special Projects' stuff is pretty amazing - for example, all the fatalities from UMK3 on the Genesis, heh, and lots more besides. It's good to have bizarrely complete sites like this!