Lady Gaga vs. Black Eyed Peas (Fergie) - Poker Hump
http://www.youtube.com/watch?v=BhnNKv09OxA

Nelly vs Lynyrd Skynyrd sweet home country grammer
http://www.youtube.com/watch?v=w-1IinUfsfA

Goldigger + Beethoven's 5th
http://www.youtube.com/watch?v=9jumo...eature=related

Edit: Lachrymology, Pheugoo var flink!