Bill Hicks.

Not that it is appropriate here, but I assume it is an allusion to the Bill Hicks' bit about marketing. http://www.youtube.com/watch?v=gDW_Hj2K0wo (strong language)

I tend to prefer DIAF or "die in a fire"

DIACF, I like to add the c, for chemical.

A former friend was fond of "I hope you die screaming in a fire", often with additional elaboration.

I'm quite fond of "I hope your head falls off"

(origin: http://www.thatcanadiangirl.co.uk/blog/2008/05/30/the-letter...)

Funny, I just watched Highlander last night. Hotel clerk to bad guy: "I hope you get your head chopped off, asshole."

I also favour "Please run into my fist".