Currently:

1. Firefox
2. Emacs: for most editing tasks, scripts, web development
3. Terminal
4. Slackpkg: keeps my firefox up-to-date
5. Vi: for editing config files as root
6. Qemu: lets me play with my OS zoo!
7. Audacious: I got so used to the XMMS interface...
8. Wine: prevents "whining" in the family when they must run spider.exe...
9. Picasa (3.0 SBo build): only program that prints full-bleed borderless photos on my HP all-in-one, plus the browser is killer.
10. Gimp: for serious graphics editing

It was very hard to narrow this down. Open Office should be in there too. Plus the toys I want to play with more, but haven't had time, like Kino, QuantaPlus and InkScape.

Jim--slacking since 3.6

no particular order

1. firefox
2. vi, mousepad (editors)
3. latex + kile + lyx
4. mplayer
5. terminal
6. wicd
7. gimp
8. okular, xpdf
9. k3b,
10. many more + lot of games

As said by weibullguy: I agree totally with you!

1. midnight commander
2. vim
3. LaTeX
4. ktorrent
5. xpdf
6. gimp
7. konsole
8. eboard
9. p7zip
10. fluxbox

Sinse im a bourne-again slacker/hacker
1 BASH
2 vim
3 xfce
4 xterm
5 wicd
6 firefox
7 qemu
8 wine
9 Mousepad
10 mplayer/amarok

this is what i use the most on my slack.

In no particular order, and not including fundamentals like the kernel and coreutils.

1. openssh
2. screen
3. elinks
4. mplayer
5. ncmpcpp + mpd
6. bauerbill
7. vim
8. zsh
9. rtorrent
10. snownews

1,firefox
2,vidalia a proxy working with firefox
3,openoffice
4,foxit reader: the only pdf-reader with annotating function I have found yet
5,smplayer
6,gedit
7,virtualbox

Simplest list ever:

kernel + everything bundled ontop of it. (gnu, Xorg, etc etc etc).
AKA a distro. :-)

1) Konqueror: renders all other file managers stupid and useless, and is a great web browser to boot.
2) Konsole: must... have... terminal.
3) Kontact: No other PIM suite even comes close.
4) Vim: In the terminal.
5) Kate: Best graphical text editor ever.
6) Koffice: 'Cus OO.o sucks abysmally.
7) Amarok: Runs constantly.
8) Ardour: Okay, so it ain't pro tools... but it costs less!
9) Kaffeine: I don't own a TV.
10) Any one of a dozen or so console programs.

Just the opposite by a long mile!

#1 mplayer
#2 openjdk / icedtea
#3 irssi
#4 firefox
#5 fluxbox
#6 wicd
#7 nmap
#8 top
#9 rhythmbox
#10 sauerbraten

(in no specific order)

vi (elvis)
sh/bash
TeX (plain, occasionally LaTeX)
ImageMagick tools
opera
links (framebuffer version)
fbv
fbida
fbpdf
wget

Koffice 2.x is getting there... it's to the point that I only use OO.o if I need to save in M$ formats. I HATE the OO.o UI.

Have you tried LibreOffice? Much faster than OpenOffice or Go-OO.