"Even Mark Shuttleworth is willing to admit that OSX has a
pretty nice usable interface that is a good goal for desktop Linux
to beat in the coming year or so. Even if you don't want to
replicate the mac, or if you think compiz is more useless than it
is functional (how dare you!?), you might still be interested in
replacing one of the two Gnome taskbars with a dock. Here is my
dating history with the docks of Linux land:
"AWN (Avant-Window-Navigator). This is the first dock I tried a
couple years back. It looks good, is easily configurable, and has a
lot of great plugins (stacks, menu's, weather etc...). It can
pretty much replace the entire gnome-panel in features. However, I
only ended up sticking with AWN for a couple months because the
auto-hide feature was (and still is) buggy and would crash the dock
during normal operation. This should be fixed for the upcoming 0.4
release; so, I might have to give it another try at that time. The
original developer works with Canonical on the Ubuntu Netbook Remix
(which I love) and is definitely capable of great things."