The footage at the beginning of this episode is of Ed White's spacewalk during 1965 Gemini 4 mission. He was the first American to walk in space and was later killed in the Apollo 1 fire.
In the scene where Steve Austin pole vault's is a reused scene from the previous episode the last of the forth of july's
In the scene where Steve Austin is running is a reused scene from the six million dollar man pilot tv movie (1973)
The Steve Austin bicep machine scene is a reused scene from the six million dollar man pilot tv movie (1973)
William Shatner's character found that he was able to communicate with dolphins. Twelve years later, William Shatner would star in Star Trek IV: The Voyage Home (1986), the plot of which also revolved around communication with sea creatures.