Sam Turns the Other Cheek - S3-E5
Continuity mistake: The gun that Marvin puts on the table changes position a couple of times.
Continuity mistake: When Diane picks up Carla and puts her on the bar stool, Carla puts her hand in her lap. The shot changes and her hands are now on the bar.
Continuity mistake: When Frasier and Diane are telling Sam they are moving in together, there is a napkin in front of Frasier that suddenly moves when Sam says "Really that was one of my highlights."
Visible crew/equipment: After Frasier and Diane come in with Dr. Ludlow, Frasier asks Diane to give him a hand, they go and talk over by the bar and you can see the end of the set, the wall ends and there is a curtain. (00:04:10)
The Heart is a Lonely Snipe Hunter - S3-E14
Continuity mistake: When the guys get back from snipe hunting Norm puts his hat on the bar. The hat changes position a few times throughout the scene.
The Heart is a Lonely Snipe Hunter - S3-E14
Continuity mistake: When the guys are getting ready to leave for fishing and Diane is trying to get them to take Frasier, there is a carton of half and half on the bar. At one point Diane is seen taking it and holding it, but a couple of shots later the carton is now back where it was.
The Mail Goes to Jail - S3-E17
Continuity mistake: The first time Sam leans down when Diane is stuck in the vent, in the closeup shots of Diane, Sam's glove is missing from his hand on the floor.
Behind Every Great Man - S3-E19
Continuity mistake: When Paula first comes into the bar the amount of beer in Norm's mug keeps changing.
If Ever I Would Leave You - S3-E20
Visible crew/equipment: A boom mic is visible after Nick goes into the office. (00:19:45)
Continuity mistake: When Frasier and Sam are talking in Sam's office, Sam sits down in his chair and leans back, the shot changes and he leans back again. (00:07:15)
Character mistake: When Sam and Diane are embracing and saying goodbye, Diane asks, "Sam?" and Sam replies, "Yeah, Shel." Shelley is the actor's real name. (00:17:00)
Suggested correction: He says "yeah, chum?" It's another word for pal or friend, which is in line with everything else he has been saying.
Revealing mistake: When Frasier comes into the chalet after skiing he doesn't show any of the visible effects after a hard day on the slopes. Meaning, his face isn't even flushed from the cold, his hair is perfectly combed after wearing a hat and there is not even a drop of snow on his boots.
Birth, Death, Love and Rice - S4-E1
Continuity mistake: Sam puts a empty champagne glass in front of Norm, the shot changes and the glass is now full.
Birth, Death, Love and Rice - S4-E1
Continuity mistake: When Cliff and Norm are walking from the pool room there is a beer on the counter. The shot changes and it disappears. Norm sits down and it reappears, only to disappear when the shot changes.
Continuity mistake: Diane's outfit (shirt/sweater) changes in the scene where Sam is lighting candles. (00:07:18)
Other mistake: After Andy leaves with his girlfriend, Diane goes to call the cops. Problem is that when she lifts the phone onto the bar, there's no cord connecting it to the phone jack.
Visible crew/equipment: When Carla says "You're kidding" about the picture she has, a boom mic is visible. (00:12:20)
Visible crew/equipment: When Norm walks in at the beginning of the episode you can see the end of the set the brick wall changes to a curtain.
Continuity mistake: In the back room, Norm's glass goes from nearly empty to half full and back.
Visible crew/equipment: When Cliff's father comes into the bar for the first time and is standing by the bar, the end of the set the brick wall changes to a curtain. (00:07:45)