The Commodore Christmas Demo
Commodore wrote their famous Christmas Demo in 1982 to demonstrate the capabilities of their new Commodore 64 computer and the upcoming Executive 64 (SX-64) portable. It was included with the test/demo disk that shipped with every SX-64 so dealers could introduce customers to the machines' advanced (for the time) sound and graphics. Though its character graphics and SID sound seem quaint by today's standards, the Christmas Demo reminds many Commodore fans of the morning they woke to find a computer under their tree.
Did Santa bring you a new computer this year, and you want to run the Commodore Christmas Demo on it? Download the disk image, then get one of these emulators: