i thought i'd update my list
Vim (text editor - for development)
Lynx (light text browser - for development)
Mozilla Firefox
MPlayer (video player)
Music Player (music player - RhythmBox...inspired by iTunes)
The GIMP (image editor...The GimpShop is a good PS imitator too...can't really call it a clone though)
Limewire (P2P client)
Gaim (IM client...so many bugs in it though :/)
Mozilla Thunderbird
xCHM (CHM viewer - good for viewing manuals in .chm format)
RapidSVN (Subversion frontend...still learning this one)
Tetravex (numbered tile matching puzzle)
gFTP (Gnome's FTP client)
XChat IRC (IRC client)