"Blessed are they who can laugh at themselves, for they shall never cease to be amused" -- unknown
Top ten reasons you know that you are a Linux user:
  1. You have more beta-development programs on your computer than stable releases.
  2. You don't cringe at the bad puns (and you know that this point refers to).
  3. The last time you actually bought software from a physical store was, well ... Are there any software stores in town ?
  4. Whenever you use a floppy disk on any computer your instinct is to mount it first and umount it before removing it.
  5. When a Windows or Mac user comes to you with a problem manipulating a text file, your first thought is, "but that is so easy, just use sed or perl".
  6. Your old 486 is faster than your friend's Pentium. (O.K. this was written in about 1999.)
  7. Your programs contain more punctuation than alpha-numerical characters.
  8. You get in heated arguments about the merits of vi vs. emacs.
  9. "grep", "yacc" and "awk" don't sound like rude expressions.
  10. The command:
    sed -n "100,$s/\(\/\*\) *\([^\*]*\)+\(\*\/\)/\1\t\2\t\3/" a.c
    not only does not give you nightmares, but you actually understand what it does.

Links
Linux Online A useful repository of software and information
Vim Home Page My favourite editor
Linux Software Encyclopedia A list of software for Linux, though it is a little outdated now.
Fedora Home Page One of the many releases of Linux
Gnome Home Page One of the many desktops for Linux
Artwork for Gnome
GIMP A superb image manipulation program, IMO easily as useful as that other one.A Also it's free and works on Windows and Macs too.
OpenOffice Doesn't have quite all the bells and whistles that it's primary competitor does, but again it works on Windows and Macs.
LaTeX The document processing and typesetting system. Books have been published using this, including math and science textbooks. I use it because, when I write, it frees me from having to worry about formatting. Knowing a few markup commands and I can just write. Don't have to worry about hard returns, or whether I have two spaces at the end of sentences. I can embed comments inside the file that will never show in the printout. The only issue is converting the text into rtf or doc when submitting to others.
LaTeX The version for windows.
Font List A huge list of fonts including medieval, cartoon, and many others. Most are usable in Linux and GIMP.
Cygwin As they say on their page: `Get that Linux feeling - on Windows'. I wouldn't want to have a windows machine without cygwin.
Unison Not the easiest to set up, but makes syncronizing directories between Linux and Windows very easy.