Exploding Plants Seeds: The Himalayan Balsam
The Himalayan Balsam is no plant to be trifled with. What's that you say? It explodes, but it doesn't hurt you. Well then. Actually, yes.. . yes it is meant to be trifled with. And yes, you read that right, the seeds of the Himalayan Balsam actually explode. You've got to see this:

If you're feeling particularly feisty, consider the fact that almost all of the plant is edible. Ever tasted an exploding flower before? Me neither. If you have, I want your full report.. but I might just beat you to the finish on that one.

To get you started, get your read on [Here on Wikipedia]. Cheers!