Continuity mistake: Missy's blond and blue-eyed like her mother, Mary, but in The Big Bang Theory, she's brown-haired and brown-eyed.
Continuity mistake: Younger Mary's a blond with blue eyes whereas on The Big Bang Theory she has brown hair and brown eyes.
Continuity mistake: When Sheldon is putting his mittens on at the table he his seen putting the first one on and the second one is on the table, the shot changes and the mitten is no longer on the table. He raises his hands and both hands have mittens on them. (00:01:55)
Rockets, Communists, and the Dewey Decimal System - S1-E2
Continuity mistake: When Tam mentions the Ku Klux Klan, Mary has nothing on her fork. When the shot changes, she's suddenly got some food on her fork. (00:15:40)
Continuity mistake: At the start, the cards in Sheldon's hands keep changing between shots. (00:00:40)
Continuity mistake: When Sheldon and Missy are sitting at the table, Missy puts a paper in the basket in front of her. A couple of shots later when she says "sounds right" the paper has disappeared. In the next shot it reappears, in a different position than it was before. (00:06:20)
Continuity mistake: In this episode, the voice over version of Sheldon states that he never got his drivers licence. However, in series 12 of The Big Bang Theory, he tells Amy that he got his drivers licence 2 years ago. (00:11:40)
A Therapist, a Comic Book, and a Breakfast Sausage - S1-E4
Continuity mistake: When George Sr. is first trying to help Sheldon, who is choking, he has his left arm under Sheldon's body. When the shot changes, his left arm is across the back of Sheldon's neck. (00:00:40)
A Therapist, a Comic Book, and a Breakfast Sausage - S1-E4
Continuity mistake: When Sheldon points out how big the sausage was that he choked on, he holds his hands up in the air to symbolize this. From the shot behind Sheldon, his hand is not visible. (00:03:00)
A Therapist, a Comic Book, and a Breakfast Sausage - S1-E4
Continuity mistake: When Tam moves his stuff on the lunch table, his arms are around his lunch. When the camera does an instant cut, his arm is no longer around his lunch. (00:03:30)
A Therapist, a Comic Book, and a Breakfast Sausage - S1-E4
Continuity mistake: When Connie is talking about her date possibly wanting some more of her, George Jr. has a fork in his hands. When the shot changes, his hand is at his mouth without a fork in it. (00:04:55)
A Therapist, a Comic Book, and a Breakfast Sausage - S1-E4
Continuity mistake: When Connie, George Jr., and Missy are sat in the car, eating ice cream, Missy goes from holding the spoon to not holding it and back to holding it, depending on the camera angle. (00:14:40)
A Solar Calculator, a Game Ball, and a Cheerleader's Bosom - S1-E5
Continuity mistake: At the start, when George Jr. says "4th down," Connie goes from holding her beer to drinking her beer in an instant cut. (00:00:30)
A Solar Calculator, a Game Ball, and a Cheerleader's Bosom - S1-E5
Continuity mistake: When George Sr sits down to talk statistics with Sheldon at the kitchen table, his beer bottle keeps rotating in his hand. Note the label. (00:08:30)
A Solar Calculator, a Game Ball, and a Cheerleader's Bosom - S1-E5
Continuity mistake: When Connie is playing the slot machine at the end, the wheels land in a set order. She then has a chat with someone and then goes to spin again, but the wheels are in different positions than before. We see Connie through all of this, and she doesn't spin between the two instances outlined here. (00:17:30)
A Patch, a Modem, and a Zantac - S1-E6
Continuity mistake: When George Jr. asks the NASA representatives if he's seen the movie Aliens, the man goes from standing up to leaning on the podium between shots. (00:01:05)
A Patch, a Modem, and a Zantac - S1-E6
Continuity mistake: At the dinner table, when Connie says, "Well, that goes without saying," George JR has a beer bottle on the table. Camera changes, and now he's holding it up in the air. (00:03:10)
Answer: Some people just have a dislike for someone that can't be explained. Could be as simple as the way he's dressed.