www.docstoc.com has to be the most amusing website. If you need to write a service thank you letter to a client or want to have something to back up your argument your favorite world issue you can find it here.
They have documents that range from personal to financial, business to casual. I mean there are over 23 million public documents to help you service your clients, friends and world better. Totally loving it - and I know my clients will too. I used some of the witty language in a thank you know and tweaked it to their personalities. They have yoga tutorials and finance places. Literally anything!