The third part of the (currently unfinished) four part series Everything Is A Remix is doing the rounds - rightly so, it's very good.
Kirby Ferguson is a NY based filmmaker who's putting his insight to work in this documentary on mashups. It's hard not to watch this and have either the geeky or marketing parts of your brain start to turn over. In my case; both.
It's worth watching to the end of each video. There's a sizable chunk after the credits each time.