Demons, Sunday School, and Prime Numbers - S1-E11
Continuity mistake: When Sheldon meets Ira, he is holding a pen which disappears a shot later.
Demons, Sunday School, and Prime Numbers - S1-E11
Continuity mistake: When Sheldon is in bed, he is holding the bible slightly upwards. A shot later, it's down, lying against the sheets.
Demons, Sunday School, and Prime Numbers - S1-E11
Continuity mistake: When Sheldon is conducting a research project and asks Ms Hutchingson what her religion is, his arm goes from raised to lowered between shots. (00:11:40)
Answer: Some people just have a dislike for someone that can't be explained. Could be as simple as the way he's dressed.