First onscreen appearance of Newman (Wayne Knight), although the voice of the character was featured in episode 2.7, The Revenge (1991). In that episode Larry David provided the voice.
Jason Alexander's mother appears as an extra sitting on a bench next to Elaine (Julia Louis-Dreyfus).
First mention of George's (Jason Alexander) brother. While visiting a psychic George claims his "brother once impregnated a girl named Pauline." In later episodes, George is portrayed as being an only child and no name is ever seen nor heard for the brother.
Jerry (Jerry Seinfeld) mentions that George's (Jason Alexander) father is bald. In the Season 4 episode The Handicap Spot (1993), George's father, Frank, was played by John Randolph, who was bald. When Jerry Stiller, who is not bald, took over the role of Frank in Season 5, Randolph's scenes were reshot with Stiller. Therefore, the line about George's father became a continuity error.