All the movie posters in the video store are for Warner Brothers productions, as is "Young Sheldon".
The car for which Georgie traded his Ford Mustang is a 1976 Buick Century Custom station wagon.
For most of the series, the location directly across from Connie's house has been disguised by camera angles because, as part of the Warner Ranch backlot, instead of the Coopers' house there's actually a park with a pool. But in this episode, as Mandy walks up Connie's steps, the fence and trees of the park can be seen. For fans of Friends (1994), on the other side of the trees to the left is the apartment building exterior used for their series.
Another example of Sheldon not knowing everything: Data is not a Commander in Starfleet, he's a Lieutenant Commander.