John and Nelle defend her father who was fired from his job as a teacher because he claims he's Santa Claus, Ally feels threatened when Larry's ex comes to town. Richard and Ling lip synch at the office Christmas party.
Casts:
Calista Flockhart, Greg Germann, Jane Krakowski, Regina Hall, Vonda Shepard, Portia de Rossi, Julianne Nicholson, James Marsden, Josh Hopkins