Like Julian, and several others, I'm not really all that fussed what anyone does with my body. I'd rather hope a few people get suitably pissed at a wake, and remember some of the stupid things I've said.
The only tune that comes to mind, is obvioulsy Always Look on the Bright Side of Life, and I hope that somebody will have the bad taste to say that they were the first person
[1] to say fuck at my funeral.
Footnote [1] Addmitedly John Cleese got in first with this at Graham Chapman's memorial service, but I don't think I can ever compete with the Python's, so I'll just have to copy them.