A few other fine public NetHack servers
Fishpool Creations NetHack Server - Back up! A finnish NetHack server
nethack.alt.org Public NetHack Server - A US NetHack server
Asteriski - A finnish NetHack server
nethack.hn.org - A german NetHack server - Down?
Other NetHack related links
Ali's NetHack Page - Lots of useful NetHack links