OT: Suggestions for Ubuntu Server

[Craig Puchta]

I have Ubuntu Server 8.0.4 install on my Pentium III, 500Mhz. with a
14 GB hard drive. I have the webserver running and I have an ircd
running. This is not a critical machine and I'm looking for
suggestions as to what other server software I could install and play
with. I'm using a DynDns.org domain name also, if that matters. So
tell me what you would install.