Willy Wonka could have powered his Great Glass Elevator on hydrogen produced from his chocolate factory.
Microbiologist Lynne Mackaskie and her colleagues at the University of Birmingham in the UK have powered a fuel cell by feeding sugar-loving bacteria chocolate-factory waste. "We wanted to see if we tipped chocolate into one end, could we get electricity out at the other?" she says

Just one more thing to love chocolate for, right? I knew I should have kept my initial science major instead of my english one. I too could experiment with chocolate for a living!

Seriously though, found this very interesting.

~Heathyr

New Scientist Tech - Technology - Chocolate generates electrical power