I've been a big fan of Google Docs, due to its portability and simplicity. When I added my name to the Google Doc, you could really see how easy it is. So many of our coworkers added their name, edited the type/color/formatting and some even adding pictures! How great is that!
I've been using Google Docs for a variety of things, especially sharing information from my home computer and work computer. Currently I am using it to write a book with a few friends--one located in Calgary, the other in Freehold.
By using Google Docs, it makes editing/writing on this collaborative effort so much easier. I'm now a card carrying, sworn believer in the power of the Google Doc!