OS: Slackware 9.1
Desktop/Window manager: Gnome
Browser: Mozilla Firefox
Mail Client: Mozilla Thunderbird
IM client: Gaim
IRC Client: Xchat
ftp client: the command line one, ftp
media player: xmms
dvd player: mplayer
image viewer: gthumb
text editor: vi/gedit
vector drawing: inkscape
image editor: gimp 2.0
livejournal client: drivel
file sharing: overnet + ed2k_gui
3d modeller/renderer: blender+yafray
C++ IDE: anjuta
I prefer tar + gzip to tar + bzip2 because I can just type tar -xzvf blah.tar.gz.