Glee (2009)

New York - S2-E22

Continuity mistake: In the first shot of New York, no one is sitting on the red bleachers in the background. In the next shot, plenty of people are there, even the Glee club.

LisaJD30

Prom Queen - S2-E20

Continuity mistake: As Kurt and Dave are talking in front of Kurt's French class, a short girl with a brown ponytail enters the class twice.

The Substitute - S2-E7

Continuity mistake: In the "Singing In the Rain" dance, the second time the three guys are on their knees, they splash water with their hands. The third time they splash, the water drops are moving toward the stage instead of away. And the rain in the background is falling up.

Dilligara

Funeral - S2-E21

Continuity mistake: While Santana is singing "Back to Black", Jessie is seen obviously scribbling something down. Yet at the end, his notepad is shown with a drawing of a cat upon it. If he was drawing the cat, he would have been drawing smooth lines, not scribbles, as the drawing contains no scribbles at all.