I would have to say the Portuguese version of, um, the Chicken Dance. I think someone downloaded it as a joke, and I never got around to removing it...
"the cuppy cake song" LOL
"So happy together"
"My humps"
"Bringing sexy back"
"Walking on sunshine"
"Pretty Women" from Sweeney Todd
"I don't want to set the world on fire"
And a few Jonas brothers & Taylor swift songs that magically appeared on here even though I hate them... ._o