Install Ubuntu Tweak from
http://www.getdeb.net. With Ubuntu Tweak you can have the latest software with the Third Party updater. Most of my programs are in the repository and can be installed through Synaptic.
Avant Window Navigator is the dock, The ring sensors and clock on the other screenie are from the program Screenlets. The calendar is rainlendar2. The theme for the first screenie is regular ol' clearlooks with the Blended Metacity theme. That can be found at
http://www.gnome-look.org. Just download the theme, go to Appearance, then Install and choose the theme.
The dark theme is one I made myself. You can find tons of dark themes on gnome-look though.
I think that pretty much covers all of it. Tell me if there is something else you need info about.