Moon Buggy
Moon Buggy Alpha runs on Jaunty using the murrine engine 0.90.3. Optionally for increased contrast and definition use the included "gnome color chooser" theme file .gnomecc.
Comes with:
GTK 2.x theme
Firefox userchrome.css
Icons
ChromeLooks 1.4-stable
Comes with a GTK 2.x theme, GDM theme, icons and X11 mouse theme.
SimpleArch
Theme based on the Arch linux website colors. Also includes a *Slim* version and Emerald theme.
clear-blue and 7 color
Includes 8 colors: blue, gray, ink blue, slategray, firebrick, darkred, darksteelblue, teal.
Krush
Ramadan Kareem
Logic
AnimaNera
Comes with an Emerald theme.
Font Zero Threes: http://www.urbanfonts.com/fonts/Zero_Threes.htm
Icons: http://www.gnome-look.org/content/show.php/LaGaDesk-BlueNight?content=109343
IANE
Dark_Star
You can find a lot more Gnome / Ubuntu themes, right here, on Web Upd8.
