Hey look, it's a new WindowsXP theme from Microsoft. After 2+ years of running this OS, we finally get *one* new theme, as promised.
This is the theme they're calling Royale, and it's included stock in the newest build of Windows Media Center Edition. I installed it and I'm liking it quite a bit so far. I think the two-tone taskbar is a little off-putting, but overall it's nice to have an updated look and feel. Check it out.