Nice job - loving the dual monitor goodness
Heres My Ubuntu 11.04 pic
Mad have a look at this GDM theme: http://gnome-look.org/content/show.p...99&PHPSESSID=6
It would complement your desktop quite well.
I'm currently using that image for both my Gnome background and GDM background. Lately I've been changing it up every week or two.