I think "The Beginning Is The End Is The Beginning" by The Smashing Pumpkins, better known as the Watchmen trailer song.
Or maybe "By The Rivers Of Babylon" from Boney M.
"Don't Bring Me Down" from the amazing ELO.
Even "A Pirate I Was Meant To Be" from The Curse Of Monkey Island. Anyone who knows what I mean deserves a cookie.
Ooh, "Candle In The Wind", sung by Elton John.
Or the Mexican Hat Dance.
"Strangers" by The Kinks.
"Jizz In My Pants" by The Lonely Island, for ultimate posthumous giggles.
"You're Going To Be OK" from Scrubs' "My Musical" to comfort the mourners.
"Superstar", the cover from Sonic Youth.
Oh wait, I may have found the greatest. "Africa", from Toto. Seriously.
"Bittersweet Symphony", from The Verve.
The entire Sgt. Pepper album, including some other assorted songs from the Beatles.
"Mr. Blue Sky", again from the Electric Light Orchestra.
And some other songs.
To paraphrase Jon Graham;
"What the FUCK was that?!"
"One kickass funeral."