Continuity mistake: After Will tells Jack that he knows that he hasn't told his mum he's gay, Jack backs into the patio doors, and the blind unrolls itself. In following shots it alternates from rolled up / down. (01:07:30)
Hey La, Hey La, My Ex-Boyfriend's Back - S2-E16
Continuity mistake: When Will and Grace sit on the couch eating the chocolate cake, in one shot Will gets a piece of cake on his fork and raises the utensil. In the very next shot the cake on the fork has vanished.
Acting Out - S2-E14
Revealing mistake: As Will and Jack walk along the street, out of NBC, they stop and Will says "Once you have a weatherman on your sideĀ ." you can see people across the street staring at the crew and actors, and one man even takes a photo. (00:16:55)
Tea and a Total Lack of Sympathy - S2-E10
Continuity mistake: As Karen is asking Mrs. Freeman to post her letter, Mrs. Freeman holds a black clipboard and a piece of paper behind the clipboard. As Karen leaves the room, between shots the piece of paper vanishes. (00:28:35)
Oh Dad, Poor Dad, He's Kept Me in the Closet and I'm So Sad - S2-E13
Continuity mistake: When Jack is talking to Karen in the office, Karen is thumbing through a magazine on her desk. In every shot change the pages the book is open on change. (01:08:00)
Continuity mistake: As Grace leaves the apartment with her cereal, the location of the milk carton on the breakfast table changes more than once. (00:44:05)
Acting Out - S2-E14
Continuity mistake: When Grace is talking to Karen about how she has just come out of a string of bad relationships, she picks up a book of cloth samples, then a second one. In the next shot her hand is empty and she picks them both up again. (00:05:15)
Acting Out - S2-E14
Continuity mistake: When Will and Grace walk down the street in the opening credits, in every shot change the people walking around and behind them on the streets change, and the cars on the street change too. (00:00:10)
Continuity mistake: When Grace storms out of Will's office, an orchid leaf falls from the pot she is carrying, onto the hallway floor. In the next shot it has vanished. (00:14:15)
Visible crew/equipment: After Will and Jack come back from the patio area, into the thanksgiving dinner area, the grey boom mike can be seen reflected in the frosted glass panel above the living room door. (01:18:20)
Continuity mistake: When Grace and Val sit and watch TV on the floor, between shots the wine bottle moves and a cork appears in the top of it. (00:24:40)
Continuity mistake: When Karen is laying on bed, looking at the leaflet Jack gave her, between shots her martini swaps from her left to her right hand. (00:26:40)
Tea and a Total Lack of Sympathy - S2-E10
Continuity mistake: When Karen is in Will's office near the end, telling him why she signed the papers, she holds a black handbag in her right hand. When she says "what's that?" the handbag is hanging over her left arm. (00:40:45)
Hey La, Hey La, My Ex-Boyfriend's Back - S2-E16
Revealing mistake: When Grace is unpacking her groceries, you can see some brand names have been covered up with black tape.
Continuity mistake: Grace puts the coffee pot down twice after pouring Will a cup, as he and Jack talk about Claire. (00:23:05)
Continuity mistake: During the thanksgiving dinner, Will is mixing salad. He then leaves the mixing spoons in the bowl. In the next shot they've vanished, and then reappear later on in the scene, back in the bowl. (01:14:00 - 01:15:35)
There but for the Grace of Grace - S2-E21
Continuity mistake: When Ben is mixing the salad with Karen, Karen walks away, and one of the wooden spoons they were mixing with falls onto the worktop. In a following shot the spoon has suddenly jumped back into the bowl so that there are two in the bowl, then in a later shot the spoon vanishes once again. (00:54:25)
There but for the Grace of Grace - S2-E21
Continuity mistake: When Shannon is asking Grace why she didn't go through with her marriage, there are three glasses of near-empty wine on the table. In one shot they all completely vanish, then reappear in the next shot. (00:55:40)
Acting Out - S2-E14
Continuity mistake: Jack's scarf keeps changing position as he is riding his bike alongside Will and Grace, down the street. The scarf repeatedly alternates from behind/in front of his shoulder. (00:00:35)
Visible crew/equipment: As Will talks with Jack about the marriage to Rosario, the studio behind the cameras is reflected on the silver set piece behind Will.
Answer: A history of the game can be found at http://www.fast-rewind.com/bacon.htm.
J I Cohen