The music in Warcraft 3's expansion is pretty good, but play through it a couple of times and you might start to wonder if there's anything else you can listen to.
So you might hit the Enter button to open up the chat console, then you could type the phrase 'TenthLevelTaurenChieftain' (without quotes)
Then once you hit Enter, you'll be treated to a (kinda lengthy) song called 'The Power of the Horde' by a band called (shockingly) 'Tenth Level Tauren Chieftain'.
The song is pretty cheesy, but it's a nice distraction for a few minutes.