
Santa Claus - S1-E12
Visible crew/equipment: When Mark Harris shows Matlock into his office, the actors' three tape marks (one T-mark) are visible on the carpet behind the chair, and at the bottom of the screen.

The Stripper - S1-E3
Continuity mistake: When Ben and Charlene Matlock visit the precinct and give The Gift to the proud new daddy, Ben teases him, saying that it's so that the boy will dress better than his father. The guy acknowledges the joke, pointing at Matlock in a friendly way. Nothing in his hand, then all of a sudden he is holding a cigar. (00:06:00)

Diary of a Perfect Murder - S1-E1
Continuity mistake: Matlock questions Mrs. Harris at the stand; Andy Griffith keeps switching between a hand in his pants pocket and a hand on the jacket over his hip. (01:06:40)
Answer: Leanne often went to the beach whenever she was upset about something. In this episode, Leanne realised that Kevin, the guy she had been seeing, had broken into her home and taken her diary in hopes of learning everything about her. This upset her because her privacy had been invaded and Kevin thought that the entries in her diary described the kind of man she was looking for. Ben drove down to the beach to comfort Leanne.
Only problem with that is that earlier in the episode LeeAnn went for a jog on the beach. She drives three hours to jog?
She didn't go for a jog. She went there because she was upset.