GLEE
Fox, 9:00 p.m. ET
This week’s holiday episode presents a series of mini-musicals – sort of extended videos, or dramatic sketches, that amount to a Glee Christmas equivalent of The Simpsons Treehouse of Horror Halloween shows. Among them: A cleverly conceived It’s a Wonderful Life spoof, in which Kurt (Chris Colfer) has a black-and-white dream, a glimpse of what life at his high school would have been like had Will Schuester (Matthew Morrison) not volunteered to teach the New Directions glee club.