What's my 5-year-old watching on Saturday morning? Power Rangers? Mickey Mouse Clubhouse? Cartoons of any kind? No to all. He's watching a documentary on his favorite channel - the NASA channel. I'm not sure what it's about exactly, but they spent about 5 minutes explaining the Kelvin scale as compared to the Celsius and Fahrenheit scales. They lost me at 'Kelvin' - nightmare flashbacks of high school science classes. Mason loves it, though. He won't let me change the channel.