Wow, I have just surfed over to http://www.virginradio.co.uk/thestation/listen/index.html
To pick up a music stream to listen to and I was greeted with this message
"Hello, Linux user! Virgin Radio is available in your favourite MP3 player (and Real) - the other stations are just in Real format. You can download a Linux version of Real Player from Real.com. You can also listen to our Windows streams with Crossover."
I think that is the first time I've seen browser/os detection on a website and it hasn't displayed a "Your not using IE6 on Windows XP, GO AWAY" message.
What a nice change.