Continuity mistake: Prior to bringing Ray up for the role-playing exercise, the parenting teacher erases a circled phrase from the chalkboard. Throughout the scene, the chalked circle flips several several times between being totally erased and having a faint outline left over.
Continuity mistake: In this episode, Frank celebrates his 65th birthday but in "Debra Makes Something Good" he says he is 64 years old.
Visible crew/equipment: Robert pushes Ray into accepting his offer to go on a citizen's ride-along. They are initially sitting on the couch at the time, and when they rise, if you look closely behind where Ray is standing, through one of the kitchen windows you can spot a production crew member.
Revealing mistake: When Raymond and Robert visit the ATM to get money out and it starts to close, they start to kick and hit it. You can see the whole wall moving as they do so.
Character mistake: In this episode, Raymond says that after three times of proposing to Debra, she said no, and he didn't give up. However, in "The Pilot", Raymond says that the third time he proposed, she said yes.
Character mistake: When Deborah wants to show Raymond's newspaper article to Frank, she calls him "Ray" instead of Frank.
Good Girls - S2-E19
Visible crew/equipment: After Debra goes upstairs angry, Ray says up to her "Forget about Miss Congeniality, that's for sure." During the shot immediately following this, you can see a microphone at the top of the screen for a second. (00:07:30)
Continuity mistake: At the beginning of the ceremony, Kevin is seen between Robert and Bernie and is all spiffy but when Debra is walking up the aisle with Warren, you see Kevin looking normal with a tux behind Lois and, then, a moment later, he is all spiffy again between Robert and Bernie.
Continuity mistake: Ray puts the snacks in a blue bag. But when they get to the field, the snacks are in a different bag.
Continuity mistake: When Frank puts down the bottle of liquor, he puts it on the middle of the table. When Raymond picks it up, it is at the edge of the table.
High School - S2-E10
Continuity mistake: The milk Ray spills on the kitchen table is there in one spot, then when Marie walks in with the shorts she bought for Ray the spilt milk has vanished.
High School - S2-E10
Visible crew/equipment: In the kitchen you can see someone walking outside the kitchen window but nobody walks in.
High School - S2-E10
Continuity mistake: When Marie walks in on Raymond being made fun of by Debra and Robert, she offers him a pair of "jazzy" and "with-it" shorts. When the camera pans back to Robert and Debra the second time, you can see Frank grabbing a cup of coffee from the coffee machine; Frank never entered the kitchen in that scene, Marie came in alone.
Good Girls - S2-E19
Continuity mistake: How is Robert's birthday, which is April 6th, the same day as Amy and Robert's one year Anniversary, when Amy and Robert started dating "a couple weeks before Valentine's Day"?
Answer: War.
By whom?
Edwin Starr.