Dance

I did this about 4 years ago, maybe longer, but it continues to be one of my favorites. Pastels on paper, 6" x 10"

Diet Coke and Mentos

If you haven't seen this yet, be prepared to be impressed!

http://eepybird.com/dcm1.html

Be sure to scroll down below the video afterwards and follow the How does it work? link to see the Super Burp girl.