Tune in as we mysteriously float back to 1983 with Gerry Davila from Totally Rad Christmas on an unseasonably warm Christmas adventure through Mexico with our cool grandma and a talking Rubik’s Cube with more powers than Superman.  ****  Topics & Tangents:  The History of Rubik’s Cube.  The theme song by pre-Ricky Martin Menudo.  Ángela Moya, the voice of the kids’ mother, played a small but grim part in “Gleaming the Cube.”  An ode to the family station wagon.  An archived, early-Internet Rubik fan site.  Las Posadas.  Date a TV show by adding a CB radio.  Rubik ending up in an eagle’s nest reminded me of “The Polar Express.”  Reynoldo’s speed cubing skills compared to the real-life Rubik’s Cube world records in 1983 and today.  ****  Commercials:  Cap’n O.G. Readmore (1985)  Cap’n Crunch Cereal: Crunch vs. Taste (1985)  An Alpha Bits Cereal commercial that’s clearly still trying to ride the Pac-Man wave, but I’m not complaining (1985)  ****  “Rubik, the Amazing Cube” and “Rubik’s First Christmas” © 1983 Ruby-Spears Enterprises, Inc.  Theme song by Bronwen’s Ghost.  Full show notes with links at adventcalendar.house.