Downloaded the demo of the Spore Creature Creator tonight. I will buy the full version, but want to wait til I get a new mac.
Here's my first creature. He's called Venumare.
I'm sure that this Creator is a small taste of the full game, but the taste is delicious. This thing is easier to use than any thing I can imagine. Build your creature. Super simple. Record a video of him doing things with a built in uploader for YouTube. Snap pics that you can mail to people's emails. Upload your creature to the online database of creatures for others to download/etc. It's all pretty fancy.