Life at KACL: This episode marks the first appearance of Noel Shemsky, who, we learn, works in the sales department, and drives a "73 hatchback," not the moped that is mentioned in a later episode. Roz does go out with him this one time and spends the rest of the series avoiding his love-struck entreaties.
This episode marks the only time in the entire series that Frasier indicates any romantic interest in Daphne. In the final scene when attempting to come up with something to do with themselves while Martin is using the apartment for his date, Daphne suggests that "the answer might be right under our noses". Frasier interprets this to mean that he and Daphne might also spend the evening romantically. He is then crestfallen when it turns out she only meant they should do the laundry.
It seems unusual that Frasier would want to hang chili pepper lights on the tree knowing that he prefers to have things classy.
Frasier drives a very expensive luxury car but didn't seem to think it important to lock the car while he was in the diner. This seems very odd, especially considering that the diner appeared to be in a poor part of town where the car could be considered an easy target for theft.
When Frasier realized he had dropped his car keys inside the diner, he went back inside to look for them. The homeless man who had collected money from the others to pay for Frasier's meal, then remarked that they weren't going to buy him dessert, too. However, Frasier had the "Christmas Platter" which came with a Yule Log for dessert. So they had already bought Frasier dessert. They all must have known this because they were all eating the Christmas Platter.
On Christmas day, after his radio show Frasier initially intended to have dinner at one of the fancier Seattle restaurants. He ended up at the diner because all the other restaurants were either closed or booked solid. However, he was still wearing the grungy outfit he wore into the office. Since most of the restaurants Frasier enjoys have a minimum dress code (as we saw in "Dinner at Eight"), why would he arrive at those restaurants for dinner in his grungy outfit?
LIfe at KACL: This marks the first appearance of "office legend" Bonnie Weems. We learn that she hosts a show about cars.
Daphne says she's never had a serious boyfriend. Obviously, she has forgotten all about her ex-fiancé Clive, whom we meet in the season 4 premiere "The Two Mrs. Cranes".
Life at KACL: This episode marks the first appearance of Father Mike, whose show we learn is called "Religion on the Line." Father Mike mentions his low ratings, which become the reason for his firing two years later by Kate Costas. This is also the debut of Chopper Dave. Ned Miller becomes the first member of upper-level management shown, but this is his only appearance. Frasier also mentions a show with "Ray the Green Grocer."
The pickle being eaten by Bulldog after he enters Frasier's apartment and sits down on his couch gets bigger after Bulldog takes a bite out of it.
Life at KACL: This episode marks the first appearance of agent Bebe Glazer, who is currently representing Bulldog. In reading the ad for the Chinese Restaurant Bulldog uses the exaggerated, stereo-typical accent that he uses for his part as the silk merchant in the radio drama in Ham Radio. It horrifes Roz in this episode as well.
Frasier told Bebe Glazer that he had a five-year-old son, when in fact Frederick was born just four years earlier.
Frasier mentions Lilith's affair with 'a Frenchman who lived in a self-contained underground eco-pod,' Dr. Louis Pascal (played by Peter Vogt), from the Cheers two-parter "Teaching with the Enemy" and "The Girl in the Plastic Bubble".
In one of the first scenes, Roz is in her booth at KACL and takes out her lipstick and compact and she is shown uncapping the lipstick. Then it cuts to Frasier reintroducing Niles to her, and we see her uncap the lipstick again.
This is the first time it is revealed that Niles gets nosebleeds when he violates his ethics. It would be a plot point in later shows, such as the episode "Kisses Sweeter Than Wine".
Life at KACL Frasier gives a time check of 4:25 in this episode, which indicates that he has a coveted "drive time" slot at KACL, probably 2-5 or, less likely 3-6. This ties in with other hints, such as the late afternoon, pre-dinner coffees at Nervosa.
When Frasier and Catherine are fighting towards the end of the episode, Catherine's blouse changes from being open to closed, and back again, from shot to shot.
Martin dismisses Frasier's call to the police as being frivolous, however, in reality, forgery is a serious crime, especially when there is a great deal of money involved. The gallery would have been subject to criminal charges if they had knowingly sold a forgery, and Frasier could have easily won any court action against them. It's also unlikely that Martha Paxton would have let the matter go.
When Frasier pondered how to get even with the art gallery that sold him the forged painting, he considered talking about his experience with the art gallery on his radio show. Niles cautioned him that doing so would be slander, and the gallery would sue Frasier for everything he owned. What Niles said about slander was a factual error. A truthful statement is not slander in the eyes of the law. Frasier would have been telling the truth on his show -- the painting the gallery sold him really was a forgery. Therefore, his story about the gallery would not be slander. This means the gallery would lose a slander lawsuit because there was no slander. It would have been impossible for the gallery to sue Frasier for everything he owned.
In the opening scene, Frasier begins to sing: "When the moon hits your eye, like a big pizza pie..." He is pretty poor at it (which could in itself be a goof, as he is reputed to be a fantastic singer), and it gets people to call in. Unfortunately, Frasier cuts off right at the beginning of the song (as above) to take his first call, which Roz has miraculously been able to ID already. However, KACL is on a seven-second broadcast delay (as we learn in "Call Me Irresponsible"), so even if Roz had not taken the time to screen the caller for name and dilemma, the man would have had to call in before Frasier began to sing.