To Thine Old Self Be True - S7-E20
Continuity mistake: Niles comes into Cafe Nervosa holding a newspaper and begins to talk to Frasier and Roz. As he says "mere words cannot", the shot changes and the next shot shows the newspaper has flipped over to the other side in his hand. He didn't have time to do this naturally.
Three Faces of Frasier - S7-E21
Continuity mistake: During the opening credits, Frasier, Martin, and Daphne are sitting at the table talking about getting older. At one point Martin says "when people reach our stage in life" and his left hand is holding his coffee cup. But as the camera cuts to Frasier we can see Martin's hand in the left corner of the screen, up in the air, without the cup. The next shot shows it back on the table, holding the cup again. All this happens too quickly for the changes in real time.
Three Faces of Frasier - S7-E21
Continuity mistake: When the first cartoon is about to be revealed, the cloth over the easel moves up and down between shots.
Three Faces of Frasier - S7-E21
Visible crew/equipment: Towards the end of the show, Marty and Frasier are sitting in the living room talking. Eddie is curled up right next to Frasier on the couch. There are a number of shots focused on Frasier and Eddie and on the bottom of the screen one can see something flick by a couple of times - and in one shot there is definitely a couple of inches of a grey metal pole of some sort, about the thickness of a broom handle.
Dark Side of the Moon - S7-E22
Continuity mistake: Roz is at Daphne's shower, saying "God, he sounds just like a prince," in reference to Simon - in her left hand is a drink and her right hand is positioned down, as though it is in her pocket. In the next shot she is still holding her drink in her left hand, but is giving Daphne a drink with her right hand - it just appears out of nowhere.
Dark Side of the Moon - S7-E22
Continuity mistake: Near the start of the episode when Frasier comes home, Daphne quickly clears all the beer cans and mess on the lounge table. After she asks Frasier how he is and he replies, "Where's Simon?". The next time we see the table the cans and all the mess on the table have reappeared.
Dark Side of the Moon - S7-E22
Continuity mistake: While Frasier is talking to Daphne about wooing Holly, the wine bottle on the coffee table changes position more than once - from sitting on a book on the left of the tray to being on the bare table on the right and then back again to the left of the tray, but not on the book. Nobody touches it during this time.
Dark Side of the Moon - S7-E22
Continuity mistake: When Roz comes over to meet Simon for their date, she is standing at the door talking and one strap from her shoulder bag is hanging down from the shoulder. The shot from behind her shows both straps are on her shoulder, and then the shot goes back to the front - it's down again. At no time did she adjust it.
Dark Side of the Moon - S7-E22
Continuity mistake: Simon has shown up at Daphne's shower and is standing at the bar/table with Roz and Holly. There is a bottle of champagne on the table, next to an ice bucket - but when Daphne drags Simon away the shot shows that the bottle has mysteriously made its way into the ice bucket.
Dark Side of the Moon - S7-E22
Continuity mistake: When Daphne goes to Niles's place to see him, she sits down on the couch and slides her purse behind her. A couple of shots later Niles gets up and now we can see her purse on the couch to her left. At no time did she make any movements that could explain its change of position.
Something Borrowed, Someone Blue (1) - S7-E23
Continuity mistake: Frasier is just saying goodbye to Niles and we can see the brochure for Daphne's reception to the left of his sherry glass. When he stands up and shouts "Daphne!" the brochure has moved about 6 inches to the right, even though no one touched it.
Something Borrowed, Someone Blue (1) - S7-E23
Continuity mistake: Roz is on the phone with a guy, trying to set up a date for Daphne's wedding - in one shot her hand is on her little black book, and in the next it is in her lap, with no time for natural change.
Something Borrowed, Someone Blue (1) - S7-E23
Continuity mistake: In the opening scene Roz gives Daphne a little gift box. Daphne puts it on the coffee table to her right but during the scene it moves back and forth between that position and being in front of Roz.
Something Borrowed, Someone Blue (1) - S7-E23
Continuity mistake: Frasier has his arms around Daphne, restraining her from attacking Simon; as the doorbell rings and the shot changes, the bag of cookies that was in her arms noticeably changes position, even though neither of them moved.
Something Borrowed, Someone Blue (1) - S7-E23
Continuity mistake: When Frasier is in his apartment, trying to get Daphne away from Niles, the book and decorative pieces on his coffee table change position from shot to shot.
Something Borrowed, Someone Blue (1) - S7-E23
Continuity mistake: Just before Simon returns from California, Roz's purse is lying flat on Frasier's coffee table. As she goes to pick it up, the purse straps are sticking up, even though no one went near it between shots.
Something Borrowed, Someone Blue (1) - S7-E23
Visible crew/equipment: As Roz and Simon are leaving, and Niles enters the apartment just before telling Martin he's married, the camera pans far too wide. On the left-hand side of the screen, you can easily see the end of the set and crew members in jeans standing around.
Something Borrowed, Someone Blue (2) - S7-E24
Continuity mistake: The brother Daphne identifies as Nigel is later Steven. Seeing as Steven is her favorite brother she wouldn't have mixed them up.
Something Borrowed, Someone Blue (2) - S7-E24
Other mistake: When Daphne comes to the Winnebago she doesn't close the door properly, you can see it opening slightly again. When she and Niles drive off, it's closed.
Answer: In the last episode, they explained that Tossed Salad and Scrambled Eggs is a metaphor for the mixed-up people to whom Frasier dispenses his radio psychiatric advice.