Continuity mistake: When Coach walks out from behind the bar near the start, he's got feathers almost up to his knees. Then when he turns around to walk back, they're now only over his feet. (00:03:55)
Indoor Fun With Sammy and Robby - S8-E19
Continuity mistake: After Sam and Robin are done playing darts, Sam puts his darts on the pool table. The shot changes and the darts have moved.
Give Me a Ring Sometime - S1-E1
Visible crew/equipment: When Sumner goes to the back to make a phone call, we can see a crew member sitting on a wooden chair with a camera beside him and a few more people in the distance. (00:04:30)
Continuity mistake: While Sam considers going to see the psychiatrist professionally just to hook up with her, Carla suggests that he feign impotence, and Sam puts his bottle down on the counter, but it cuts to a closeup with Sam suddenly holding the bottle in his raised right hand. (00:09:30)
Visible crew/equipment: During the intro scene as Carla walks behind the bar, a crew member in a red shirt is visible standing to the left of the front window. (00:00:20)
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.
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)
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)
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)
One for the Road (1) - S11-E26
Visible crew/equipment: When Rebecca leaves Don at the table to relax while she gets champagne to "celebrate the answer", it cuts to an overhead shot as we hear the TV host introduce Salman Rushdie and Dr. Ruth, and the set lighting can be seen as well as the boom and mic moving around at the top of the screen. A few minutes later the mic can be seen bobbing again in the overhead shot from the same angle. (00:03:20 - 00:08:20)
Continuity mistake: When Carla comes to the bar with her shrink, the lights aren't reflected in the door as they usually are. The lights are suddenly reflected on the door a further two shots later. (00:18:00)
Sam's Women - S1-E2
Continuity mistake: Just after Norm says "This man knows his animal kingdom" he looks at his watch and there's nothing in the other hand. In the next shot, his hand is suddenly on his beer glass. (00:20:40)
Give Me a Ring Sometime - S1-E1
Continuity mistake: When Diane says "Nothing" to Sam, there is a crease on her top and part of her necklace is resting on that crease. 2 shots later, the crease is gone and the necklace is hanging freely. (00:21:25)
Answer: Here is the source of the "WE WIN" photo: http://www.oldnycphotos.com/nyny587ac.html Brooklyn, of all places.