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)
A Patch, a Modem, and a Zantac - S1-E6
Continuity mistake: At the start, Sheldon has his arms crossed at the dinner table, and then the shot changes. When it does, he has a fork in his hand and a hand up by his face. Shot changes again, and he's back to having his arm folded. (00:03:21)
A Patch, a Modem, and a Zantac - S1-E6
Continuity mistake: When Sheldon is laying on the sofa, the creases in the rug on the back keep changing between shots. (00:12:45)
A Patch, a Modem, and a Zantac - S1-E6
Continuity mistake: When Sheldon is lying on the sofa, his position changes several times. Note his shirt sleeve in relation to the edge of the cushion he is lying on. (00:12:50)
A Patch, a Modem, and a Zantac - S1-E6
Continuity mistake: When Sheldon is doing the maths for NASA, he taps the chalk on the board twice, leaving two dots. These dots disappear in subsequent shots. (00:14:50)
Answer: Some people just have a dislike for someone that can't be explained. Could be as simple as the way he's dressed.