Lows in the Mid-Eighties (1) - S3-E8
Continuity mistake: When Will stops Grace, as they are about to have sex, they sit up in the bed, and he tells her he thinks they should wait. In the first shot Grace's black strap is falling off of her arm, yet in the next shot it's back up on her shoulder. (00:59:20)
Heart Like a Wheelchair - S6-E6
Continuity mistake: When Karen and Lyle sit down on the sofa, they put their scotch glasses down on the table, next to some magazines. During their kisses on the sofa, the glasses and magazines quite obviously rearrange themselves. (00:11:05)
It's the Gay Pumpkin, Charlie Brown - S5-E5
Continuity mistake: When Leo comes into the apartment and starts talking to Will and Grace, they're sitting at the table. Grace has a newspaper which she holds over her plate. Between shots the newspaper keeps vanishing then reappearing.
A Bunch of White Chicks Sittin' Around Talkin' - S4-E25
Continuity mistake: In the opening scene with Will, Grace, Jack and Karen, as they open the wine and talk about what they would like to accomplish in life, the newspaper disappears from the table during the scene, then reappears in a later shot. (00:47:30)
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)
Sex, Losers and Videotape - S5-E20
Continuity mistake: When Jack leaves his class to go talk to Grace, they are all sitting. As the angle changes we can see through the glass panel that they are all standing and talking to each other literally one second later.
Continuity mistake: After Grace pours Jack some eggnog, we see the pitcher on the desk, and no eggnog is visible. It then shows Karen getting out her laptop, then back to a shot of Grace looking stunned, and now the level of eggnog in the pitcher has almost doubled. (00:01:25)
Poker? I Don't even Like Her - S3-E19
Revealing mistake: Karen clearly doesn't suck any air from the balloon (that's why her voice doesn't go high.) (00:33:55)
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)
Continuity mistake: When Grace answers the door and meets Diane, Diane's long blonde hair alternates from hanging behind or in front of her left shoulder as they talk. (00:02:25)
The Truth About Will & Dogs - S1-E10
Continuity mistake: Grace asks Will to watch the dog quickly as she goes to the bathroom. As she puts the dog on the sofa, the position of the wine bottle, wine glasses and cork on the coffee table change between shots. (00:26:40)
Continuity mistake: The 2 adapters on the back of the TV at the QVC set have their names covered up and not covered up, back and forth between shots that incorporate them. (00:08:00)
Visible crew/equipment: When Grace is up against the wall pretending to be the ficus a red boom mic drops into shot.
Fred Astaire & Ginger Chicken - S6-E20
Plot hole: Jack spends part of this episode clumsily teaching Karen basic steps of the fox trot for her wedding dance with Finster. However, in season 4, episode 16 ("A Chorus Lie") It is established that Karen and her husband Stan have, for years, performed an annual spotlight dance at their Valentine's party on Shelter Island. Later, she and Will are seen beginning a rather elegant fox trot to "Someone to Watch Over Me," complete with spins and a dip.
A Little Christmas Queer - S8-E9
Continuity mistake: When Will is sitting on the kitchen counter upset, he is eating butter biscuits from a tin, with the tin and the tins lid on the counter next to him. Then his mum comes in and they talk and at the end of the scene they hug; but now the biscuit tin lid has vanished although nobody touched it. (00:17:00)
Love is in the Airplane - S8-E6
Continuity mistake: When Grace is trying to get in the first class part of the plane, as she talks to the steward her hair keeps changing position from behind or over her right shoulder. (00:01:35)
Continuity mistake: When Grace and Karen enter the cabin, Grace puts her bag down on top of the sofa, so that the large bottom faces the door. In the next shot when she walks back over the bag has now changed position so that the bottom of the bag faces us. (00:04:50)
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: When Jack lets slip about Will's affair with Steven to Grace, he throws a blue tassel to the floor, and bends over so Grace can kiss his butt. But when he stands up he puts a purple tassel back on the table. (00:28:15)
