I am very sorry for the loss of your Dad.
Sorry to hear about your dad. Truly the first thing that comes to mind is some Monty Python bits. Was he a fan? I always get a big laugh out of the "Bring out your dead" scene from The Holy Grail movie, or the Dead Parrot Sketch from the Flying Circus series.
There's always John Cleese's eulogy for Graham Chapman...
Or The Pogues version of "Worms", or "Turkish Song of the Damned" or "If I Should Fall From Grace With God" (which I'm rather amused to note is currently being used in a family car ad...)