And beyond this great clip (and The Grey Album, GirlTalk, & BiggieHendrix) what else plays on it?
One of the great new music art forms of recent times is the mash-up, but it is a lot harder than it first sounds. A mash-up is essentially of what was originally two or more songs or music tracks that have been mixed together. It is one of the many ways to make something old new again. You could say it is the cousin of the sample, which is exactly what it sounds like: a sample of one song used in another song, say just three drum beats or one phrase from the lyrics.
Hybrids. Gene splicing. Mutant mix up. Call it what you like but we have always like it when you pour from two boxes into the same bowl. Two tastes that taste great together.