The Masseuse - S5-E9
Trivia: One of the subplots concerned Elaine's new boyfriend, "Joel Rifkin". Within the episode, Elaine wanted her boyfriend to change his name because he shared the same name as the serial killer named Joel Rifkin who had been arrested June '93. She has a conversation with her boyfriend, Joel, and suggests he change his name to the less scary Dion, Ned, Remy and then O.J. The show aired in November, 1993, seven months before football Hall of Famer O.J. Simpson would be tried for the murders of Nicole Brown Simpson and Ron Goldman.
Trivia: Co-creator Larry David can be heard as the bystander on the beach who calls out "Is anyone here a Marine Biologist?"
The Sniffing Accountant - S5-E4
Trivia: The blue jumper in the episode that Jerry wears, and that Kramer also ends up wearing that made people sniff appears in a later Seinfeld episode where George is dating the daughter of a welfare officer. She can be seen wearing it when they are sitting in George's car at one point.
Chosen answer: George does mention his brother in the episode "The Parking Space". They actually really never mention anything that contradicts the fact he had a brother though, it just isn't mentioned.