You Gotta Lose This Job - S3-E7
Visible crew/equipment: When 'Hannah' and Lilly walk into Rob Reiner's office, the multiple head studio lights are reflected on Hannah's large black sunglasses.
Revealing mistake: In the opening credits, Beefy Bert has a different hair colour to what he has in the actual episodes. This was not included in Series 3.
Bubble, Bubble, Toil and Trouble - S2-E22
Continuity mistake: Cleo, Rikki and Emma are sitting together in their school campus grounds. Cleo is sitting upright in the wide shot but she's leaning to her left in the close-up. (00:10:10)