Okay, so what other forms of hygiene do we accompany with songs? Personally, I have always brushed my teeth to the Lone Ranger Theme Song (I would say the Overture of 1812, but if I used the whole thing I'd have little white stubs left at the gumline by the time I finished, to say nothing of the holes in my cheeks). I know you people are as crazy as I am, so let's hear your "personal" tunes! (But I don't really want to know to what tunes Spaw whizzes.)
Incidentally, the Twinkle Twinkle thing has been touted in parenting magazines for the past several years as a way to teach your children to wash their hands thoroughly. It's probably got something to do with all those stupid potty seats that play the song while the child is "in process."