I've been working with PF on my gateway, setting it up to prioritize ssh and DNS among other things. It's so incredibly neat. I've also set up Postfix and configured thttpd to not let people eat up all of the 158Kb/s upstream bandwidth that I have measured that we have. It's better than the 128Kb/s we pay for, so I won't complain.
The plan is to buy a domain and point it to my IP address so it's not the ugly 0x3e42ef42.adsl.cybercity.dk hostname it is now, but something that I actually have a chance of remembering. Right now there isn't much of a site there, just a quite simple and pretty frontpage, if I may say so.