The Briggs-Rauscher reaction.

[theweaselking]

Watch on YouTube

Wikipedia explains it here

Comments

[silmaril.livejournal.com]

So cool.

So very, very cool.

[dilickjm.livejournal.com]

The awesomeness isn't in the reaction, it's in the comments to the video where people claim "It's faked!" over and over and over.

Pure comedy gold.

(And the reaction itself is among the coolest things I've seen. Thanks!)

[dilickjm.livejournal.com]

Just realized the comments I referred to were from the videos at the bottom of the Wiki link.