Continuity mistake: The tattoo of Monica on Iam's shoulder has bobs on the back left side of his shoulder. Later in the same episode it shows the tattoo on the right side of his shoulder. (00:35:00 - 00:42:00)
Fuck Paying It Forward - S8-E4
Continuity mistake: Every time the camera comes back to Ian sitting down, the pill bottle and blue cup in front of him change position. (00:07:45 - 00:09:10)
Fuck Paying It Forward - S8-E4
Continuity mistake: Fiona has a pack of camel cigarettes on the table as she's talking to Lip and Ian. The shot cuts to them and back to her. The pack has disappeared.