As the lad has been spending to much time with the wife's sister, he's fairly insistent that we listen to LMFAO - Party Rock Anthem which is a good example of everything that's wrong with music. He also likes Hello by Martin Solveig which is still shitee, but slightly better. I've listened to it so much that I now walk around singing it.
Although to be fair, I've just had Kid You Not by Cashier No.9 on and he keeps saying 'again, again' now it finished, so there's hope for the little monkey yet.