Second time Lance Barber has been on the show. The first time he played one of Leonard's old bullies in The Speckerman Recurrence (2011), and this time he plays Sheldon's dad, George Cooper Sr., whom he also plays in Young Sheldon (2017).
The Chuck Lorre vanity card (#604) for this episode is written in Russian. It translates to "guilty" in English.
The actor that plays young Sheldon in this episode, Iain Armitage, also plays young Sheldon in the show Young Sheldon (2017). This episode, therefore, is the first true crossover.
The comic book Howard is reading on the couch is Mister Miracle #12, published on November 14, 2018 by DC Comics.
Title reference: Sheldon is inspired by an old speech that was taped on a VCR.