First heard of the Loudness War in IEEE: http://spectrum.ieee.org/computing/software/the-future-of-mu...

Didn't know it's turned into an entire meme by now: http://en.wikipedia.org/wiki/Loudness_war. Lots more links here for those who want to find out more.

Illustrative list of waveform and peak level examples: http://www.cdmasteringservices.com/dynamicdeath.htm. This page really goes to town on graphs of various popular songs to show how and where the clipping occurs.

Death Magnetic is definitely one of the best recent examples especially due to the contrast with the GH version.