LOLZ aplenty in the best YouTube parodies

An addiction has taken hold of me - for YouTube parodies.  I'm constantly to be found weeping tears of mirth over the keyboard as some eejits prance around pretending to be Rihanna or Christina Aquilara or similar.

This is so politically incorrect - but take out the gay computer (??) references and it's really funny.  And the one who plays Liam! He's spot on.

Ahem, not strictly a parody but KITTENS ON THE WEB sung in a Metallica style! This is genius.

Have you got a good one?

Share the link, let's have a guffaw!