I Kissed A Girl (Parody) - Katy Perry - Elderly Remix

DJ Earworm - United State of Pop 2009 (Blame It on the Pop) - Mashup of Top 25 Billboard Hits

Hot N' Cold - Katy Perry (With Lyrics)

McDonald's: The Rap

Katy Perry - Hot n' Cold Music Video, Sarah Palin Debates include Swimsuit Category, Paul Newman , and more on TWIYT #16

LMFAO - YES

Katy Perry "Hot N Cold" - YouTube Live '08