Freelance Hellraiser - Stroke of Genie-us
It's the Strokes' "Hard to Explain" guitar riffs juxtaposed with Christina Aguilera's warbling for "Genie in a Bottle."

You can hear it
here (although the ending is cut off, cause it goes into another song after that).
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Moved on to
this one... see how many old skool tunes you can recognise. Your starter for 10 is Megablast by Bomb the Bass (anyone else remember Xenon 2?)
This track contains some swear words - you have been warned