The Hitchhiker’s Guide to the Galaxy Radio Series
The Hitchhiker’s Guide to the Galaxy radio series is available online from the BBC Radio 4. This is apparently the new episodes they are doing for the final three books. Unfortunately, they’re only availavle in either Real or WMA format, but its better than nothing I suppose. At least you can download them and have a listen. I will have to poke around the site a bit later and see if the original episodes are available as well.
Update: I was wrong about the download option. They are offering an audio stream of the shows and you can listen to old episodes for up to 7 days after they are aired. Still cool though.