Thanks to Louis, I have been introduced to the world of Norwegian Recycling. This group (still trying to figure out their background) has a series of songs, all of which have one similarity - they are all combinations of several songs gelled together to form a single song. Some of them are pretty nice like "How Six Songs Collide" which contains samples from:
1. Jason Mraz - I'm Yours
2. Howie Day - Collide
3. Five For Fighting - Superman
4. Angela Ammons - Always Getting Over You
5. Boyzone - All That I Need
6. 3 Doors Down - Here Without You

Some are not that good, quite crappy to be exact, but nevertheless, the way they try to seamlessly combine the songs together, is quite innovative.

You can listen/dl the songs from here or just youtube it. They even have mtvs which are quite interesting made.

For people who prefer original version of songs or simply dislike remixes or medleys. This is not for you.