Trivia: The Parking Garage was originally written to end with Kramer driving around the mall, but the actual car wouldn't start, so they went with that ending.
Trivia: In this episode, Kramer was supposedly carrying an air conditioner in an awkward-shaped box. To make it more realistic, actor Michael Richards actually did carry around an air conditioner for the entire episode.
The Library - S3-E5
Trivia: Marian the librarian gets her name from the famous play/movie The Music Man, which includes a song called "Marian the Librarian".
Trivia: Not only was Michael Richards carrying an air conditioner the entire episode, he cut his lip on it as he was putting it into the trunk of the car.
Trivia: The man whose dog Jerry is stuck watching is named after Larry David's manager, Gavin Palone. (Palone is also one of the executive producers of Curb Your Enthusiasm.
Trivia: The Voice of the car thief who Jerry talks to on the phone is co-creator Larry David.
Trivia: George is wearing a "Broadway Bound" shirt. "Broadway Bound" is a Neil Simon play and Jason Alexander (George) played Stanley when the play opened on Broadway. Stanley Jerome is a neurotic, high-strung character who is constantly obsessing and worrying over details. He and his brother work at writing a comedy sketch for NBC Studios.
Trivia: When Jerry is talking about the "magic loogie", it is a parody of the scene from the film "JFK", where Jerry is parodying Kevin Costner. Wayne Knight (who plays Newman) not only appeared in "JFK", he was also in the magic bullet scene and positioned in the same spot for both scenes.
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.