Quick link here, just found this one by accident. I haven’t checked it out yet, but looks very minimalistic, which I like.

WinXP Desktop Shell Replacement – Evil, as in Dr.

### Update ###
I’ve installed it, and it’s really pretty cool. It’s a side-docking bar that consists of your Explorer Quick Launch toolbar items, plus a tray notification area. There’s a context menu (right-click menu) that has the contents of your Start Menu. The bar is alpha blended, and also apparently has an Outlook / MAPI hook to show your number of unread messages, plus a animated bell icon to show you have new reminders. I think I’ll keep this one.