Apparently the spore Creature Creator has been leaked early. A file named SCCTrialsetup.exe can be found in torrent sites.

The Creature Creator will allow you to start playing with all the different body parts that will be at your disposal in the full version of Will Wright’s simulation of everything when it ships in September. Once the game ships, you’ll be able to take the characters you created and populate your universe with them. Creature Creator will feature seamless interoperability with YouTube to let players instantly create, upload, and share videos of their creatures.

(Some places are saying it’s been taken off an unreleased magazine demo disc).
You can search SCCTrialsetup.exe on google here