I know the Zune wasn't very popular when it came out, but I'm sure this will be!!! (see image below)
It's the Zune-Style theme for Windows XP. It's really cool. Much better than Luna, Olive and Silver. Even Royale (in Media Centre 2005).
Download it here: http://www.skattertech.com/2006/11/windows-xp-zune-theme