Here is a neat Mythbusters spoof. Watch the third video (click more) for the scientific version. 
“When Mythbusters said that you couldn’t make a Coke and mentos powered rocket, these two mythbusters decided to prove them wrong. If you like Mythbusters, science things, rockets, or just watching things blow up, you’ll get a kick out of this.”
Here are the scientific tests
November 21st, 2006
Looks great.. Think I’m gonna try it myself tomorrow.
November 21st, 2006
That was so horribly pathetic and lame, why did you guys post this….. who would wast their time making this?
November 22nd, 2006
Geek central! Especially the use of the Total Annihilation soundtrack half-way through video 2. Respect.