Trial Balloon: December 15, 2008 Archive

Welcome to Monday, December 15, 2008.
It is estimated that this will be the busiest day of the year for the U.S. Postal Service, with 960 million pieces of mail processed today.
I know "snail mail" is derided and people tend to roll their eyes when the subject of the post office comes up, but my personal experience with our remarkable system of letter and package delivery has been pretty good. And as fast and convenient as it is to communicate by e-mail and through the Internet, much of the commerce that takes place online couldn't happen without reliable follow-up and delivery of the hard goods by the USPS.
To honor our diligent mailbox-stuffers, how about some songs that start with, or revolve around, the receipt of a letter?
I'm planning to play "Once in a Very Blue Moon", "Paint My Mailbox Blue" and "Mr. Postman" today. But it will be a crazy week for mail delivery all across the country, so there's room for this playlist to grow.
Any suggestions? What have I missed?