Visible crew/equipment: When Zaphod says his first line "I certainly didn't survive.", you can see the person who plays his third arm standing behind him.
Big Brother - S1-E1
Continuity mistake: At the start of the episode when Del walks behind Grandad's chair, the way he is holding his jacket changes between shots. (00:01:15)
Saturday on Sunset Boulevard - S1-E5
Visible crew/equipment: After Ralph slips on the banana peel and crashes into the car, one of the killers takes Pam hostage, and in a couple of shots the reflection of the boom pole/mic being held by the boom operator is visible on the surface of the green car. (00:35:00)