Loose Lips Sink Relationships - S4-E5
Continuity mistake: When Jack is talking to Dorleen, the yellow schedule in his hands disappears between shots. (00:05:50)
Prison Blues - S4-E4
Continuity mistake: When Karen gives her name to the police officer at the prison, the guard behind her opens the jail cell door twice. (01:03:15)
Crouching Father, Hidden Husband - S4-E3
Continuity mistake: When Will is telling the story to Karen using the small bottles of tequila, scotch, gin and vodka, the bottles sometimes change position between shots without Will touching them. (00:46:30)
Hocus Focus - S4-E24
Continuity mistake: When Jack is stroking the rabbit that he thinks is Karen, the position of the mobile phone on the side next to him changes, and also a glass of drink appears next to him in one shot, but is gone in all others, previous and after. (00:41:05)
Crouching Father, Hidden Husband - S4-E3
Continuity mistake: When Grace says "Elliot is here with me," at the school dance, she puts her left hand onto her chest. In the next shot her arm is down by her side. (00:51:45)
Continuity mistake: When Will and Grace are in the kitchen, Grace says "We'll have to agree to disagree" then she slices her pepper in half. In the next shot the pepper is whole again, and she halves it again in the next shot. (01:11:45)
Loose Lips Sink Relationships - S4-E5
Continuity mistake: Jack swaps schedules with Dorleen. Jack gets a yellow one, Dorleen gets a white one. Later when Jack takes the schedule from his pocket, to bribe Dorleen to give him friday off, the paper is white. (00:05:30)
A Bunch of White Chicks Sittin' Around Talkin' - S4-E25
Continuity mistake: When we see Jack dancing at the open auditions, there is a grey sports bag behind him which alternates from propped up against the small black chair to sitting in front of the chair on the floor, many times during the scene. (00:52:25)
Continuity mistake: After Jack tells Mrs. Adler that Nathan dumped Grace, she walks over to Grace. Grace is holding a plate of finger foods, with sticks in them. The sticks and food change position between shots. (00:14:35)
Hocus Focus - S4-E24
Continuity mistake: After Fannie rips open Grace's shirt and ties the bottom into a knot, the way the knot is tied and positioned changes during subsequent shots. (00:34:00)
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)
A Bunch of White Chicks Sittin' Around Talkin' - S4-E25
Continuity mistake: When Karen is talking to the security camera in the cell, before receiving the phone call from Stanley, the pieces of salami strewn all over the bed change and some pieces disappear, most noticeably one piece on the pillow. (00:57:30)
Continuity mistake: At the beginning of the episode, Wills' scarf repeatedly changes from hanging loosely over his shoulders, to wrapped around his neck. (01:01:15)
Continuity mistake: When Will and Gavin are at the gay club, they sit down at the table with their laptops. There is a bowl and a glass candle on the table, which change their position and even disappear in some shots. (00:14:00)
Continuity mistake: When Karen and Jack are in the Barney's window room, the door is open. When they leave, it is closed. (01:07:20)
He Shoots, They Snore - S4-E21
Continuity mistake: When Grace is setting up her design class, she writes "Professor" on the board, and curls the end of the R into a spiral. But in the shot when she says "T.A. - Teachers Assistant" the spiralled end on the R has gone. In the next shot it's back again. (01:04:40)
Answer: A history of the game can be found at http://www.fast-rewind.com/bacon.htm.
J I Cohen