Visible crew/equipment: Wesley enters Vladimir's office to talk with him and Vladimir had a large white window behind him. As they talk, the reflection of a green screen of these windows is in Wesley's glasses. (00:06:34)
Suggested correction: I believe this is just the reflection of the window. Modern glasses have an anti-reflective coating on the lenses that can sometimes cause certain reflections to appear green. I dated a girl who wore glasses, and I regularly noticed reflections in them that were green in colour.
Not to mention, why would they use a green screen if nothing is visible outside the window? For that matter, why would they illuminate a green screen if it wasn't visible in the shot?
Shelter from the Storm - S3-E18
Continuity mistake: When Winn and Brainy hug, Winn starts the hug with one arm high and one lower, towards Brainy's waist. The shot cuts and both his arms are up and in the centre of his body.