I found this.
Very quickly, those applications are:
* AdiumX - got it
* Cyberduck - I have ftp
* Firefox - got it
* iBackup - I have rsync
* Nvu - I still don't understand what it is
* Quicksilver - got it
* StuffItExpander - got it
* TextWrangler 2 - I have Vim
* VLC - I have mplayer
* Windows Media Player - oddly, got it
I think when the author says "New Mac User" he really means a complete beginner, not only when it comes to Macs, but also when it comes to computers...
Still, it's a nice list, because it has the links to all those applications and it also describes what each of them do.