Currently:
xterm
kismet
becomeroot (needed with kismet)
privoxy (I've set it as proxy when using gprs, to filter needless banners and other pay-by-the-megabyte needless extra, slow stuff)
media streamer (haven't found anything to use it for yet though)

Future:
openvpn (I need it, but apparently the current version must be installed by dpkg'ing the .deb or something - I'm waiting for a click-install version)
ssh
vnc (probably)