Backseat Becky, Up Front - S6-E25
Visible crew/equipment: When Rebecca goes to talk to Mr. Drake at the party you can see the top of the set and the studio lights in the upper left corner. (00:06:25)
Continuity mistake: When Carla hands the drinks to the costumer to bring to table six there are 3 drinks - 2 brown and 1 clear. The shot changes and now it's 1 brown and 2 clear. (00:07:10)
Continuity mistake: At the beginning of the episode after Rebecca goes into the office, Woody walks over behind the bar and starts to talk to Sam. Carla has her hand by her mouth - the shot changes and she doesn't. (00:02:50)
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."
Continuity mistake: When Carla says "This will be great - Nick's a bleeder" they are standing next to each other without touching. The shot changes and they each have one arm around the other.
Continuity mistake: When Carla is saying what happened at the wedding, Norm is about to take a drink - the shot changes and he is already drinking. (00:14:25)
Continuity mistake: Diane is looking at the picture Carla gave her. The shot changes and Diane is now looking straight ahead as she gives Carla the picture. (00:08:25)
How Do I Love Thee, Let Me Call You Back - S2-E10
Visible crew/equipment: The shadow of a boom mic can be seen at the top of the screen when Sam comes out of the office to see who is coming with him to the fight. (00:09:10)
Old Flames - S2-E7
Continuity mistake: When Diane walks in and asks where Sam is, there is a box on the bar. When she walks up to the bar the box has changed, then later changes back.
Old Flames - S2-E7
Continuity mistake: In the opening scene when Norm is talking and he says "we caught a little movie this afternoon," he starts to take a drink from his beer, the shot cuts to behind him and he is still drinking. Then the shot changes - his mug is sitting in front of him, and he starts to take a drink. (00:00:40)
Visible crew/equipment: When Carla is having her vision about Cliff the camera goes to a wide shot - at the top of screen you can see the shadow of a boom mic.
Get Your Kicks on Route 666 - S10-E2
Visible crew/equipment: The edge of the set can be seen after Norm drives up in the golf cart. (00:22:30)
Get Your Kicks on Route 666 - S10-E2
Revealing mistake: When the guys are stranded you can tell the background is just a backdrop as the scene is not perfectly flat - there are some wrinkles in it. (00:13:05)
Get Your Kicks on Route 666 - S10-E2
Continuity mistake: When Frasier is sitting at the bar talking about the trip he is going to take, Cliff walks over and sits down. There is a beer sitting in front of him - he pushes it forward and Sam moves it. The shot changes and the beer is back where Cliff had first moved it, and he is holding his own beer. For the rest of the scene his beer keeps appearing and disappearing while the other one keeps changing position.
Continuity mistake: When Sam puts the paper from John on the bar it is next to a bowl, the next time we see it there is now more space between the bowl and the paper. Part of the paper is in the air, then the next shot when Sam picks up the paper it is lying flat on the bar.
Visible crew/equipment: At the end of the episode when Cliff is talking you can see the end of the set, the brick wall changes to a curtain. (00:23:55)
Continuity mistake: When Claudia is saying goodbye to Sam she is holding her purse and a magazine, at first the purse is against her body, the shot changes and the magazine is.
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: 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)
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.
Answer: Here is the source of the "WE WIN" photo: http://www.oldnycphotos.com/nyny587ac.html Brooklyn, of all places.