Frasier's dislike of hugging is not without precedent. He makes the statement he 'hates hugging' in the Cheers episode, "Honor Thy Mother".
The Happy Chef's name is Leo in this episode. In "The Adventures of Bad Boy and Dirty Girl (2)", it was Floyd.
(Leo the Happy Chef is leaving the station)
Bulldog: I love that guy, man. He'd give me all his leftovers.
Roz: I warned Leo, you keep feeding him, he'll keep coming back.
Frasier: Since when did we become a society of huggers? We hug for everything nowadays. "Hello" - hug; "Congratulations" - hug; "Nice haircut" - hug. It's absurd. I mean, if we want to express real emotion for someone - I mean, where is there left to go?
Bulldog: I've had good luck with the storage closet.
Niles: My reasoning?! My reasoning was based on my mother's obsession with vermin!
Daphne: When will you just admit that this junk belongs in a dustbin?
Martin: You know, I was on a case once where the wife constantly nagged the husband like this. "You never put anything in the garbage. Why don't you ever put anything in the garbage?"
Daphne: Well, he should have listened to her.
Martin: Oh, he did. And that's where we found her!
Roz: I actually heard that if you have regular physical contact, it can extend your life.
Frasier: Well in that case, you should outlive Styrofoam.
Daphne: Dr. Crane, are you alright?
Niles: I'm fine...just a little hot...and foamy.
Martin: You know what must've happened? My Hot'n'Foamy must've exploded!
Daphne: (with an incredulous look on her face) He was a detective, ya know...
The Hound of the Baskervilles
Frasier: I guess we'll just have to wait 'til Lady Baskerville returns from the spa!
He is referring to the Sherlock Holmes mystery The Hound of the Baskervilles by Sir Arthur Conan Doyle; in the book, the title characters own a foreboding pet, not unlike the vicious dogs Maris keeps at her home.
Episode Title: Are You Being Served?
This episode title is named after the classic British sitcom Are You Being Served? which ran in the 1970s and '80s.