USAA (http://en.wikipedia.org/wiki/USAA#Returning_profits_to_the_i...), although most people aren't eligible (https://www.usaa.com/inet/pages/pub_eligibility_task_entry).
It is a great example of how constraints build value. By constraints I mean, they have had to deal with military customers stationed in far flung places for years. This built their capability to conduct business virtually.