On the day of Discovery's final return to Earth, its crew and the crew of the International Space Station had an amazing wake up call from Captain James T. Kirk himself. I'm sure the astronauts laughed with this one, while trying to hold their emotions in their last mission day.
The wake up calls tradition started in Gemini 6 mission, which lasted from December 15 to December 16, 1964. Ground control sent "Hello Dolly" sung by Jack Jones. From there, the tradition started. Every genre has played up there, from the rock classics to all kinds of pop, country, classical music, jazz and bossa nova songs. Sometimes, NASA also transmits especial wake up calls for especial occasions. This was one of them.