"Rolling sushi in space" is one small step away from "measuring the effects of weightlessness on tiny screws." You go get 'em, astronauts.
Japanese astronaut Soichi Noguchi just launched from Baikonur Space Center, and is looking forward to being the first person to roll sushi in microgravity. Actual quote:
Noguchi is bringing the raw materials to the International Space Station, where he plans to prepare and serve "a couple of flavors of sushi." What varieties, how it will be prepared, and how the raw fish is stored for its sojourn in space has not been made public.