I needed to call a web service for a sample application I was writing, didn't matter what it did, I was more interested in the comms than the application, but being a lazy so-and-so couldn't be bothered to write the three lines of code required to host one, so...
Google the following: inurl:.asmx
The treasure trove, every web service google has found! Including treasures like:
An anagram solver for cheating at Countdown: http://services.aonaware.com/CountCheatService/CountCheatService.asmx
Access to the entire American edition of the Holy Bible!!! : http://www.francisshanahan.com/TheHolyBible.asmx