Ian Dixon posted another interesting addon for Media Center, this time exclusively for those within the influence of the BBC. A BeebMC, a plugin developed by Damian Mehers, allow you listen to BBC radio within Vista Media Center. To get it work, you need Real Player, and version 3.5 of the .NET framework installed. The downside is that, It will not work with Extenders, since the BBC streams using Real Audio.
More info: BBC Radio