The title might be a tad over-dramatic, but having played with Spotify for about 10 minutes, I'm convinced it's the hands-down best damn streaming music player I've ever seen - and thanks to TechCrunch and their post How To Try Spotify Immediately, No Matter Where You Live. They have a great explanation - but this little hack might not last long, so I'm just going to give you the steps to do it, and you can read about it after downloading.
Here are the steps:
Invite yourself from anywhere:
1) go to http://www.daveproxy.co.uk/
2) enter the following URL: https://www.spotify.com/en/get-started/
3) Create your account, for UK postcode - check http://www.postcodesearch.org.uk/
Now get downloading before they close this thing up. Thank me later.
If you need a little more info, just think iTunes - but all streaming. You can make playlists and drag streams into the playlist for later. Do you really need to know more?