Video: Ke$ha "Tik Tok" w/ Bonus "The 5"

Ok! So I've been listening to this joint for quite a while now on the radio and bars and clubs and I never really paid attention to it.
For a while I thought it was Lady GaGa, but then some crazy white girl went bizzerck when the song came on last Saturday at a spot I was, so I dared to ask who was that singing? She answered (in my best white girl imitation) "OMG! Have you been living under a rock, she's my favorite, I love herrrrrrrr".

Since she failed to answer my question I did a lil bit of research and came up with her video and a lil bio.

MTV The 5: