Cliff Burton
I'm sure most people know who Cliff Burton is, but for those of you that don't he was Metallicas bassist on the first three album. His death is an extremely bizarre one, in my opinion. Burton was crushed to death by a bus.
During Metallicas tour for
Master of Puppets the band was spending a lot of time on their tour bus. Cliff Burton complained about having to sleep in a small cramped area on the bus, so Kirk Hammett and Cliff decided to draw cards too see who got to sleep where on the bus. Burton won the game and wanted to sleep in Hammett's bunk by the window. So, that evening Burton laid down in Hammetts bunk to get some sleep. A bit before seven AM while riding down the interstate in Sweden the bus, according to the driver, hit some black ice and flipped off the road throwing Burton out of the window and crushing him under the bus. However, its commonly believed that the bus driver was drunk and there was no black ice. The accident was investigated, and such and never was there any evidence of black ice. The driver was never charged with anything. Cliff Burton was 24 years old when he was killed.

Memorial near the crash site.
http://en.wikipedia.org/wiki/Cliff_Burton#Death