The woman on Frasier's answering machine flies in on American Airlines Flight 11. Four and a half years later, co-creator David Angell and his wife Lynn were killed on American Airlines Flight 11, the first plane to hit the World Trade Center in New York during the September 11, 2001 terrorist attacks.
Linda Hamilton was previously on the show as a guest caller in the show's pilot episode "The Good Son (1993)."
Frasier meets Laura at gate A7. This is the same gate at which he said goodbye to Kate Costas in season three's "It's Hard to Say Goodbye if You Won't Leave."
Mock apple pie is made from a combination of crumbled Ritz crackers and a syrup. The syrup contains cream of tartar, which makes an eater think that they are enjoying apples. [Read More: https://www.mashed.com/215181/heres-what-really-makes-mock-apple-pie-taste-like-apples/?utm_campaign=clip]
The episode title is from the movie "Odd Man Out (1947)" directed by Carol Reed and starring James Mason. The movie is based on a novel of the same name by F. L. Green.