I've been using vim for a few days now. Darn good editor for touch typists. Every key seems to have a feature in normal mode. Initially I was annoyed by this, as i would accidentally turn some feature ON (like macro instead of exiting (by typing 'q' instead of ':q') but later as I understood them, I was really surprised at how easy and productive vim can be.
My previous post seems to be deleted during the restoration of server backup. Anyways here is the link to the google video where Bram Moolenaar delivers a lecture on effective text editing using Vim.
7 Habits For Effective Text Editing 2.0 that i posted previously.
Another good article article on why you should use vi:
Why, oh WHY, do those #?@! nutheads use vi?