*The TV that Goofy orders includes Dopey digital, which is of course one of the seven dwarfs and a pun on Dolby.
*'Mickey Mouse' is printed on the side of the box.
*This is a great in-joke. When Goofy clears the room to make space for his speakers, he wipes away all the items on top of the cabinet. These are: a photo of Walt Disney; a picture of Goofy’s first appearance in the 1932 cartoon Mickey’s Revue (when he was then called Dippy Dawg); a picture of Clarabelle Cow who is part of the Mickey family and Goofy’s occasional girlfriend and a caricature of John Lasseter, the CCO of Disney and Pixar animation studios.
*I’m not 100% sure about this one, but Goofy’s fish looks an awful lot like Cleo from Pinocchio (1940).
*Once all the equipment has been set up, Goofy looks at his Mickey Mouse watch.
*The Goofy holler appears at the 5:37 mark when he is shot into space.