Personally I'm still mainly using Gnome vanilla style, but Docky is look nothing less than fantastic!
My fellow blogger at the awesome site http://www.omgubuntu.co.uk, has been writing a lot about Docky. The Launchpad project description says: "Docky is a full fledged dock application that makes opening common applications and managing windows easier and quicker. Docky is fully integrated into the GNOME Desktop and features a no non-sense approach to configuration and usage. It just works."
WOW! For more info I've added links to some of OMG Ubuntu!'s Docky posts below.
- In Awe Of Dockys' "Panel Painting"
- Docky Themes [Yes, Themes for Docky!]
- The Future Of Docky - Docky Creator Jason Smith Tells Us Why Docky Is Going To Get Even More Awesome
- CoverGloobus Gets Docky Sync, New Features