As mentioned before (usually in Spinal Tap related threads), although I've been in very few bands, we've lost drummers by drowning in their vomit, suicide by pills and vodka, and a decapitation (hit first by one car while crossing a dark street then a second one which separated his head from the rest of him!). Plus one more due to reasons I never heard (though I'm guessing a drug overdose) - a good friend that was going places... Oh well!