Coke + Mentos + Too Much Free Time =
A demonstration of the domino effect. http://www.glumbert.com/media/mentosdominos I've been reading about the, dropping Mentos into a bottle of Coke, experiment off and on for awhile now. It must have been a real mess for the kid who tried it first, I imagine there was lots of yelling and grounding going on. I've not tried it yet but I'll try to remember to pick the ingredients up the next time I go to the store. On further reading, the mint Mentos work best and it has to be Diet Coke.
Also, at the beginning of the video, it names this experiment #214. These guys used a lot of Coke and candy. I wonder how much it ended up costing?
Link to their website: http://www.eepybird.com/
This is a link to the Wikipedia article on it http://en.wikipedia.org/wiki/Mentos_eruption which explains the science behind it and has lots more links to similar things including a link to Pop Rocks Candy. It sounds like Pop Rocks had a similar explanation of the process used to make them. http://www.poprockscandy.com/