Continuity mistake: When Oscar is on his way into his building, his sweat suit is perfectly clean after playing baseball. Once in the apartment he is covered in dirt.
The Odd Couple (1970)
1 continuity mistake in The Big Brothers - chronological order
Starring: Tony Randall, Jack Klugman, Al Molinaro
Genres: Comedy
Continuity mistake: In the opening credits of the first season of The Odd Couple, Felix is moving in "with his childhood friend", Oscar. In a subsequent season, a storyline does a flashback to say that Felix and Oscar met when they were both jurors at a trial. Soon after, they cut the word "childhood" on most of the openings after people called the station to mention the mistake.
Felix Unger: Everyone thinks I'm a hypochondriac. It makes me sick.
Trivia: Although Jane Dulo plays Jack Klugman's mother, she was only five years his senior.