I installed
latest kde alpha, (I like being on the edge)
bittorrent
xmule (guess...)
kmplayer + mplayer
lotz of plugins for xmms and other progs, skins (like liquid), wallpapers, screensavers etc
kopete (chat chat chat)
synaptic (graphical package manager)
aptitude (not-s-graphical package manager)
localepurge (diskspace indeed)
rafkill (nice raptor-like game)

and wolfenstein Enemy territory, but thats not a debian file...

guess there is even more... its so easy using apt-get...