So far, I've installed the following on my Dell Mini:
tcpdump (IMO, this is a mandatory package...should've been installed by default)
gdesklets (I'm going to remove this because desktop space is at a premium)
That's it, so far. Surprisingly, I find myself not needing much more than what apps are already installed. Then again, I've had the Mini for less than a week. :)
EDIT: also installed 'locate' but the install didn't include the updatedb.conf file...working on that now.