for crushing an illegally parked Mercedez with an armoured tank....
A team of Japanese researchers won the Ig Noble Prize for Chemistry, for "determining the ideal density of airborne wasabi (pungent horseradish) to awaken sleeping people in case of a fire or other emergency, and for applying this knowledge to invent the wasabi alarm."
Hehehe. For the list of Ig Noble Prize recipients and their achievements, go to the Ig Noble site.
The award ceremony was on September 29, 2011, and proud recipients attended the event.