I love the idea of picking the right speed (bpm) of tracks for the running training you're doing and creating a playlist to suit a particular training run. Today I was doing a slow 3m and was really struggling to run slow enough to Arctic Monkeys (the Garmin kept beeping at me to slow down!), so I switched to one I love but would never normally use for running - a Texan band called the Belleville Outfit (which iTunes labels 'new acoustic') - and after that it all went like clockwork!
I agree though I wouldn't buy the RW playlist - just too dated. For decent-paced running, my favourites are Arctic Monkeys, Maximo Park and yes, Black Eyed Peas (Elephunk) album. In fact 'Pump It' is probably the only song from the RW list I'd give the thumbs up to. My absolute favourite for putting a sprint on is Maximo Park's 'Our Velocity' - great for spurring you on to that last sprint finish.