Have to get this off my chest as it bugs me everytime i see it.

Rihanna - Umbrella - the ballerina pointy toe scene is blatantly not Rhianna....you never see her doing it in full shot....stand in pointylegbollocks!

Green Day - When September comes - everyone else is shown having thier head shaved but the main character we only see from the waste down whilst hairclippings are dropped on his knee from out of shot..... towussytoshaveyourheadfoppishactorbollocks!

Any more ?