I just tried out Avant Window Navigator for the first time, after seeing Neil’s latest blog entry. It’s pretty slick, and worth trying if you have xgl/aiglx/whatever. I also wrote a Banshee plugin which makes the current track cover appear in the dock.
Banshee playing “Stadium Arcadium”
You can get the plugin here. Just drop the dll into ~/.gnome2/banshee/plugins.