I also am partial to the VIM class of editors. Today, as I write this, I have about 10 gvim windows open...
VIM is good to know because it is virtually everywhere there is a Unix/Linux system. You can walk up to a Linux system and know that some version of VI is installed...
I also like Gedit and Jedit and use them from time to time. Jedit is good because it has some IDE features like function browsing for C/C++ and Java....
BTW, isn't WINE awesome... I am able to run MS Word 2007 without even running a virtual machine. I also use VirtualBox from Oracle for my VM needs and have a wide variety of client OS's installed including Win Xp, Win 7, various versions of Ubuntu, Debian, CentOS, Fedora Cora, and others...