Don Petit is one of my favorite American astronauts. He's made some great science videos during three different trips to the International Space Station. This video was made on Planet Earth, but it's still fascinating. When Pettit's fellow astronaut Mike Massimino found himself with a broken BBQ grill, he called up Pettit to come help fix it. Why call an astronaut to fix your BBQ? Because experiments in understanding the fundamentals of combustion and space station safety gave Pettit an edge in figuring out how to make the Earth-bound grill work.