The new Novell SLED 10 rc3 release is looking really really impressive for an office environment. Perhaps that will also tickle your fancy. I loved SUSE 10.1 on my 9300, but then went back to Ubuntu 6.06.
I've been switching back and forth between SUSE 10.0 and Ubuntu 6.04. However recently got the XGL + Compiz effects working in SUSE and was completely blown away. Note: It does appear to heat up the graphics card a bit as I havent found...
For all you Firefox users.. be sure to give the FasterFox extension a try. It does amazing wonders on broadband, especially the mutliple pipeline http transfer setting.