A few weeks back I linked through to the barking-mad “Hooray for Santy Claus” – a goofy Christmas song covered by Señor Tonto and released as a free MP3 over the holiday period (thanks to the excellent Boing Boing.net).
More interestingly though, Cory Doctorow reports at BoingBoing again, (via Our Mediated World) that the 1964 B-Movie Santa Conquers The Martians from which the original of the song is featured on is now available as one of the weird and wonderful films you can download at archive.org.