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: 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)
Oh Dad, Poor Dad, He's Kept Me in the Closet and I'm So Sad - S2-E13
Continuity mistake: When Jack meets his father in the restaurant, his father says that he got a phone call from Karen Walker. When Jack says, "Wow," there is no sign of his arms being crossed, but when it cuts and Jack says, "I got the same phone call," his arms are suddenly crossed. (00:11:20)
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)
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)
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)
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 Grace puts her handbag on the worktop, the straps hang down, but when Will says "Ooh, pushed a button," they stand upright. (00:09:20 - 00:10:30)
Acting Out - S2-E14
Continuity mistake: When Grace is talking to Karen on the phone, asking for advice on how to be mean, Karen is in the bath. The amount of bubbly foam on her arm differs in every shot. (00:11:40)
Continuity mistake: When Karen pours a cup of coffee, the coffee is old, so she pours the coffee out of the window and puts the blue mug in a large see-thru plastic container. In the next shot the mug has vanished. (00:10:45)
Hey La, Hey La, My Ex-Boyfriend's Back - S2-E16
Continuity mistake: The cereal boxes that Grace unpacks onto the counter during the beginning scene, change, move around, alter positions etc. constantly. (01:03:30)
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.
Continuity mistake: As Nurse Pittman is talking about doing her training mostly on oranges, to Grace, she is putting on one of her rubber gloves, and her other hand is bare, yet in the next shot both gloves are on. (01:15:40)
Continuity mistake: The position of the high heels in the barrel, in the church bazaar differ greatly between shots as Karen enters the room, up to when she walks over to find her slingbacks. No-one else touched the shoes in between. They also change position as Karen kindly gives Sally some extra money. (00:57:25)
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)
Continuity mistake: When Will and Grace sneak into Val's apartment to look for the music box, the number on the door is 12E. However, in Season 1, 'Grace Replaced', when Val and Will are talking in the elevator, she says she moved into 15F.
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)
There but for the Grace of Grace - S2-E21
Continuity mistake: When Will and Grace are sitting at the dining table discussing how much like Sharon and Joseph they are, the napkins on the table change shape and move around a bit, and one ends up with a plate underneath it just before Will picks it up.
Answer: A history of the game can be found at http://www.fast-rewind.com/bacon.htm.
J I Cohen