In the spirit of skins that look like boring standard UIs, I have created a skin that fits right in with Windows. I basically took a screen cap of a Visual Studio 2005 toolbar and foo_title-ified it. Hence the name, foolbar. Here's what it looks like:
foolbar_1.0:

foolbar_1.1:
foolbar_1.2:

and the skin itself is attached. Scotty J, I borrowed heavily from Vista Carbon. Since this is my first skin, I wanted to base it on something that looked great to start with. Also, the cropped foobar logo is just like in Vista Carbon, but I'd like to make that a non-cropped image when I get the time. Buttons were gently and tenderly ripped from foo_ui_columns.dll.
(Edit: And I'm now using Tahoma as Verdana rendered with last chars chopped, odd)
(Edit [2006.10.09]: v1.1 - Fixed foobar button, added Search button)
(Edit [2007.03.30]: v1.2 - Added more text using two lines, text displayed is based on playback state.)