So, I'm helping my (pseudo) step daughter (she's 8) label the planet stickups she wants to put on her ceiling yesterday. Hah, I got Mars and Venus confused, so we went online to be sure we got them right. Heh, I learned about the planets before they found Uranus' rings (who knew?).
So, we get them labeled and I start telling her that NASA has two RC vehicles cruising around Mars right now. Hey, I'll show her some of the pictures since we're on the web. Anyway, I'm looking around, and suddenly I tell her to go run and get the 3D glasses from her new movie.
Mars in 3D! The two of us were in here going "Wow!" and "Whoa!" and "How cool!" - I sounded more like a 8 year old than her.
Here are my favorite three from Spirit (I didn't even look at Opportunity's set yet). Obviously best viewed in full screen and at least 1024x768 resolution.
Panorama of 'Bonneville':

Image of Spirit on the Mars surface ("Photoshopped" the rover on a real pic of the surface):

Closeup of Martian soil: