I use Google Docs alot to share my personal documents, share work documents or just to manage my daily TODO list (as complicated and endless as it is! ;-)
You can access Google Docs via your mobile Wow! I was happy when I saw this since I don't like always having the laptop open if I just want to check something BUT (there is always alittle BUT) this is read only :-( Well it makes sense since mobile AJAX isn't support on all phones but it would've been a nice functionality expecially when I finally gonna get my Samsung Omnia i900.
Anyway, enjoy and have a good weekend! :)