As a 1K I've received 3 different specially branded 1K or United music CDs over the years. Haven't gotten one in the last 2 or 3 years, however.

A few years ago I received a very nice specially commissioned United Airlines/Frank Sinatra "Come Fly With Us" music CD that was sent to Million Mile Flyers:

http://members.aol.com/premex/upload.../sinatracd.jpg