Here's the list of all the episodes these clips are from:
-2x5: The Rocky Horror Glee Show (0:00 - 0:08)
-2x13: Comeback (0:08 - 0:13)
-3x12: The Spanish Teacher (0:13 - 0:23)
-3x20: Props (0:23 - 0:31)
-4x8: Thanksgiving (0:31 - 0:42)
-5x8: Previously Unaired Christmas (0:42 - 0:53)
-5x13: New Directions (0:53 - 1:00)
![](https://i.ytimg.com/vi/DrDOTQ_CTn0/maxresdefault.jpg)