Tim Cunningham (Tim) also played Chuck in "Coach's Daughter", and Greg in "Fortune And Men's Weight" and "Where There's A Will".
Ted Danson is also cracking up at the second shout out of "Sinatra" by Al. He tries to hide it while drinking from his coffee cup.
Al Rosen is visibly cracking up at his own joke after the second "Sinatra!"
When Norm approaches Lewis a camera is clearly visible over his right sholder
Sam says that he's never had a woman as just a friend. That's not true, as Carla is a friend, and they've never been together romantically.
Sam tends to overlook Carla quite a bit. Besides, she started out as a co-worker, not a woman he met socially.
When Cliff hears that Norm has taken his date to see 'Gandhi', he praises it as "a fine piece of cinematic art".
John Ratzenberger, who plays Cliff, also has a small role in 'Gandhi' as an American Lieutenant.
Coach has blackouts - why wouldn't he make mistakes like forgetting peoples names?
During the scene where Diane, Sam, Coach, Norm and Cliff were talking about calling Carla to make sure everything was ok, Sam (Ted Danson) picks up the phone. You can clearly see a white bandage wrapped around his right forearm. If you look closely, you can also see another white bandage that is up near his elbow. (Same arm.) It was never explained in the episode what happened.
Wasn't Diane suppose to leave with Sam's brother in the previous episode? So why didn't he come back for her or why didn't she tell him that she wasn't going with him?
The teaser scene made such an impact that the writers of Frasier re-enacted it 20 years later in The Harrassed Frasier, Episode 10-12 (albeit with a different punch line). Sam interrupts a no-holds-barred argument with Diane to ask, "Are you as turned on as I am?" Diane replies "More."
Twenty years later, Frasier attempts that line in an argument with Julia, and she replies quizzically, "No."