Nothing gets to you, staying fresh staying cool

If you were impressed by videos of the two doofusses screwing around in their driveway listening to Bill Gates, then you haven't seen jack shit yet. Mark and Seawitch have your required reading on thier blogs... pick one and go do your homework first, it only makes today's post more impressive.

No, really... go ahead.

...And a bit longer for everyone on dialup.

You're back? Good.
Now that you're all educated on the equation "Mentos + Diet Coke = Holy Crap!" watch what happens when the professionals get to work. (It's a 13 MB file, so download it to your machine first by right-clicking and choosing the "save target as" option)

Although I tried, I wasn't able to get this to embed but you owe it to yourself to check out what - in a perfect world - should be the next Mentos commercial. It's just that good.

Did your inner geek just have to go adjust himself? Yeah, mine too.

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Insta-Update: So, how and why does this work anyway? According to Lee Marek, (who did a M+DC demonstration on Letterman in 2003) it's not nearly as sinister as you'd think... despite all the creepy Germans in the Mentos ads.

It's not chemical at all, rather it's due to surface tension and the physical properties of Mentos... with maybe a little of the magic called "freshmaker" thrown in for good measure.
Apparently the surface of a Mentos is covered with thousands of tiny little indentations called "nucleation sites" that allow bubbles to form very easily. They lower the surface tension surrounding the CO₂ bubbles and cause the Diet Coke to release its stored carbonation rapidly. Additionally, the Mentos is heavy so it drops to the bottom of the bottle, and all the bubbles rising up through the soda allow even more bubbles to form, so the reaction builds upon itself exponentially.
The result, of course, will be teenage boys nationwide getting drenched in Diet Coke fizz. God bless America!