One of the features that sets Novell's SUSE Linux Enterprise Desktop (SLED) 10 apart from the pack is it's unique menu replacement for the gnome-panel.
Well, you can now install the new "gnome-main-menu" in Ubuntu.
I had actually tried this a few days ago, but I was pretty turned off by how ugly it looks with the default Ubuntu theme:
Compare with:
(I'm going to change my theme and give the new menu another shot this week, we'll see how useful it is.)