I recently started writing a library in Ruby that utilizes the Microsoft Exchange Web Service (EWS) to perform some rudimentary tasks. I was asked by a couple people to provide more examples on how to use the library. I will be doing so in upcomming blogs. In the meantime you can look at the library for yourself here:
It is also available via a gem:
gem install viewpoint
There is a bug tracker on Github. If you have any issues please open a ticket.
Have fun and let me know how you are using it.