Beastie Boys vs. Vera: Hey Dear Ladies (DJ Schmolli Mashup Mix) (January 2009)

Christina Aguilera vs. Dave McCullen: Dirty Bitch (January 2009)

Alizee vs. Justin Michael: Fifty Sixty Seventy Love (Ben Double M Mashup Mix) (January 2009)

Ozzy Osbourne vs. Bangles: Crazy Like An Egyptian (DJ Schmolli Mashup Mix) (January 2009)

Related links (for more information, mixes, mp3s):
DJ Schmolli
Ben Double M