1) I don't use tilling because I don't need it, so openbox
2) Thunar, because it is what I have been using and don't see a reason to stop
3) Firefox. chromium and others break with my old ass builds, ff is the only on I find decent for old hardware
4) Xchat, because my own plugins I wrote and it works and it's nice
5) Archive management isn't dependent, this option shouldn't be on the list
6) VLC, works great on here and my mobile, vlc for the win
7) Whatever works, depends on the system. I strictly use html5 on the media center so Flash is kinda out the window
8) xterm, used for quite a while, no complaints for what I need it for and I like my config file just the way it is
9) Feh, I use nitrogen for the wallpaper also.
10) gedit for in-depth things. else nano
11) The only device I use ebooks for is my tablet so, UBReader? For format conversions and all I do use Calibre, but it's not a standard install for new systems I do/have.
Systems I use frequently also have:
1) Eclipse OR Netbeans, both nice. Depends on hardware running it
2) Blender
3) FTP server vsftpd, client gftp
4) Multimedia: devede, cause you know torrent for me ends up as a dvd for family and such
5) Calendar: orange
6) Games: steam (linux support now bitches), zsnes. gvbam, kega-fusion, epsxe
7) Windows Emulation: wine (duh)
Anything else gets installed as needed or I script/code it myself. Things such as conky, tint2, plugins, blah blah blah.