The Unkindest Cut of All - S2-E2
Continuity mistake: While waiting at the vet's office the first time, Eddie's tongue goes in or out of his mouth depending on the angle several times.
Adventures in Paradise (1) - S2-E8
Continuity mistake: When Frasier is first looking at the magazine article featuring Madeline, we can see the page opposite the one he's looking at. The next shot shows a different page, even though he is supposedly looking at the same one, all the time exclaiming about how great she is.
Continuity mistake: Frasier is holding a plate of food in the kitchen, but after Roz comes in with the exploded cherries jubilee all over her, the food on his plate has changed completely. It could not have been affected by the cherries jubilee explosion as he had his back to the door when that happened.
Continuity mistake: Just before Frasier says "What I want is to be left alone", Roz, Niles, Marty, and Daphne are standing at the door. The shot goes to Frasier, and then back to them, and they have all changed positions, with no time to have done this naturally. (00:21:25)
The Show Where Sam Shows Up - S2-E16
Continuity mistake: Near the end of the show, at the end of the scene in Sam's hotel room, Frasier sits down on the couch; his raincoat is over his hands and wrists. The next shot shows his left hand and arm lying on top of his coat.
Continuity mistake: In the scene where Daphne, Niles, and Frasier are at the table trying to solve the old murder case, the string and paper tag on Daphne's teabag changes sides in her mug.
You Scratch My Book... - S2-E15
Continuity mistake: Honey puts both hands on Frasier's shoulders, but the next shot shows one around his shoulder and one around his back, with no time shift positions naturally. (00:18:55)
Fool Me Once, Shame on You, Fool Me Twice... - S2-E14
Continuity mistake: Daphne is visiting KACL and has Frasier's headset up to her ear and then down on the console in a split second, with not enough time to do this naturally. (00:13:45)
Revealing mistake: Towards the end of the episode, as Frasier is on the lounger by the windows, a power cord is on the ground going through the far left window (where glass should be), possibly going to the lamp.
Continuity mistake: Martin opens the jewel case-like box twice in two different shots in the background. (00:09:55)
Adventures in Paradise (2) - S2-E9
Audio problem: Madeline arrives at the apartment and says "Hello" to Marty, Niles and Daphne. However, her mouth is out of sync when she says it. (00:10:00)
You Scratch My Book... - S2-E15
Continuity mistake: Honey walks over to Frasier, a glass of wine in one hand. Then suddenly she uses both hands to rub his shoulders. Supposedly she gave him the glass because it is all of a sudden in his hand now, but we never see him take it from her.
Fool Me Once, Shame on You, Fool Me Twice... - S2-E14
Continuity mistake: Daphne visits the radio station where Frasier works about halfway through the episode. She holds the earphone piece up to her right ear, then it cuts to a different camera angle and the headphones are lying on the desk with no time between shots. It's actually quite glaring.
The Botched Language of Cranes - S2-E6
Plot hole: Several times throughout the show, it's bought up that there is a seven second delay on Frasier's show at KACL, which, among other things, would allow Roz to "dump" the last seven seconds of what's been said and prevent it from being broadcast. When Roz notices that Frasier is still on the air during his rant, it takes her about nine seconds to get back to her console, so she should have been able dump the last seven seconds of his rant, leaving only the first few words of Frasier's rant (likely no more than "Good Grief, have you...") going to air, which would be much less awkward compared to his entire rant. (00:09:20 - 00:09:50)
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.