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.
Elenco:
Calista Flockhart
,
Greg Germann
,
Jane Krakowski
,
Courtney Thorne-Smith
,
Portia de Rossi
,
Lucy Liu
,
Peter MacNicol
,
Josh Hopkins
,
James Marsden
,
Julianne Nicholson
,
Robert Downey Jr.
,
Hayden Panettiere
.