Lows in the Mid-Eighties (1) - S3-E8
Continuity mistake: When Will phones Jack, while he hides in the bathroom, Jack puts a plate of chicken down and answers the telephone. Then through the following conversation they have the position of the fried chicken pieces on the plate differ. (00:53:50)
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)
Lows in the Mid-Eighties (1) - S3-E8
Plot hole: In this episode during the flashback scenes, it is shown to us that Will comes out of the closet during his freshmen year of college during Thanksgiving Break, when they spend the weekend at Grace's Parents house. However in the season 1 episode "William, Tell" Grace claims that Will came out to her at senior year of college during Christmas Break. Quite a difference for such a memorable time.
Lows in the Mid-Eighties (2) - S3-E9
Visible crew/equipment: When Will and Grace walk past the old supermarket through the rain, near the end, the camera trolly is reflected in the shop windows, behind them, as they walk past. (01:20:50)
Lows in the Mid-Eighties (2) - S3-E9
Continuity mistake: When Will tells Grace he's gay, the champagne bottle on the table keeps rotating.
Lows in the Mid-Eighties (2) - S3-E9
Factual error: When Will and Grace bump into each other in the supermarket in 1986, more recent items and brand names can been seen in the fridges and on the shelves during the scene.
Lows in the Mid-Eighties (2) - S3-E9
Continuity mistake: When Will tells Grace that he is gay, there is a tray of finger foods on the table next to him, as he kneels on the floor. In the second shot, the plate is covered in cling film, but in shots before and after, there was no cling film.
Three's a Crowd, Six is a Freak Show - S3-E10
Continuity mistake: When Grace gets two bottles of beer for her and Mark, she sits down on the sofa with both bottles in her hands, yet in the very next shot one of the bottles has jumped into Mark's hand.
Three's a Crowd, Six is a Freak Show - S3-E10
Revealing mistake: Grace's boyfriend has six toes but in closeup shots, when he takes off both socks you can clearly see only five toes on each foot, when they are specifically trying to hide one foot.
Three's a Crowd, Six is a Freak Show - S3-E10
Continuity mistake: When Grace is in the toy shop, and is hiding in the ball pit from Mark, the colour of the balls around her changes.
Three's a Crowd, Six is a Freak Show - S3-E10
Continuity mistake: When Grace gets two bottles of beer out for her and Mark she removes the lids on the beer bottles. In the next shot the lids are back on both bottles.
Revealing mistake: Grace has a present for Larry and Joe - a cement handprint decorated with twigs. She made it when she was twelve, and after a couple of decades the twigs in the cement are stick alive with healthy green leaves. (00:30:50)
Continuity mistake: When Will is sticking the white bow on the kayak present, the card is on the table. In the next shot it's in his hand.
Swimming Pools... Movie Stars - S3-E12
Continuity mistake: When Will and Grace are in Sandra Bernhard's bathroom, Grace takes a photo and then puts the camera in her arm. Between shots the position of the camera changes. (00:45:15)
Swimming Pools... Movie Stars - S3-E12
Continuity mistake: When Karen arrives late to Mason's swim meet, Jack balls her out, and she stirs the Bloody Mary she's holding then throws the celery stalk down into the pool. Yet, two shots later, as Jack rides his scooter out, the long celery stalk is amazingly back in her drink. (00:50:40)
Continuity mistake: After Jack and Karen ask Grace if she knows any good designers, they run over to the table and grab a pencil each. After they grab their pencils, the position of the pencils in the pots changes. (01:06:35)
Continuity mistake: When Grace is looking through the sheets pulled from the magazines which Jack gives her, the paper at the back of the pile she is looking at changes between shots. You can tell because the layout is different. (01:09:30)
Continuity mistake: When Grace is in the batting cages, she gives Will some money to go buy her a corn dog and some nachos. The door to the cage is wide open, but in the very next shot of Will, the door is locked shut. (01:17:50)
Brothers, A Love Story - S3-E14
Continuity mistake: When Karen reads Stan's will and sees that a third of his money will go to charity, she goes woozy in her chair. In this shot the table is free from loose jewels, yet in the next shot two rings are sitting on the table. (00:10:45)
Continuity mistake: As Karen and Beverly play snooker, and are trying to pot the black ball, the positions of all the little blue cube-stick chalks keep changing. They jump onto the table/onto the tableside between a few shots. (00:35:10)
