Oh my god, there are so many...Must I pick just one?
Well if I had to pick just one off the top of my head, it would be when Vince Neil from Motley Crue killed Nicholas "Razzle" Dingley from Hannoi Rocks. Vince was driving drunk when they went to get more beer and then he stopped in the middle of an intersection when break fluid came out. Then BOOM! There goes Razzle's tennis shoe.
One of the Norwegian black metal guys killed a member from a rival band and ate some of his brains or skull or some shit. Rappers get all the credit but metal has some sick fucks too. I might have fucked up the story a bit but I got the main jist across.
Lead vocalist Dead shot himself in 1991, and legend has it that Hellhammer, Mayhem's drummer and the person who discovered the body, made a necklace out of pieces of Dead's skull. Guitarist Euronymous then allegedly cooked and ate portions of Dead's brain.
Miss GG. He was the bessssst....
But his was a fairly humdrum death followed by a spectacularly tacky funeral. I knew him before he looked like that (in the Jabbers period), and I was disturbed by the whole thing, as were friends of mine who went to the funeral.
My vote goes to Country Dick Montana of The Beat Farmers. Had a heart attack and died onstage, behind his drumkit during a song. A great man in a great band.