The random / shuffle features of some audio players are fantastic. I have 3000 songs on my iPad - I set it up to shuffle over an eight-hour period and the stuff I was hearing I was impressed with because it was so diverse. Everything from pop to metal to jazz to classical.
Usually just playing whatever I'd never get that sort of mix so it was nice. I think I woke up to Oh Berlin, which was impressive indeed - a nice early-morning wake-up call. I didn't expect that.