The Christmas episode of 30 Rock will be airing tonight (December 9).  Alan Alda and Will Forte will be making guest appearances.  Below is a synopsis and three sneak peeks from NBC.

LIZ (TINA FEY) AND AVERY (GUEST STAR ELIZABETH BANKS) CONVINCE JACK (ALEC BALDWIN) TO TELL HIS MOTHER (GUEST STAR ELAINE STRITCH) TWO BIG SECRETS

ALAN ALDA AND WILL FORTE ALSO GUEST STAR

Liz (Tina Fey) and Avery convince Jack (Alec Baldwin) to come clean about things that he’s been keeping from his mother (guest star Elaine Stritch) when she visits him for Christmas. Later, Liz attempts to mend Jenna’s (Jane Krakowski) relationship with Paul (guest star Will Forte).

Meanwhile, Tracy (Tracy Morgan) buys the rights to a film he shot so that it will never be released and compromise his new, more serious persona. Also starring: Jack McBrayer, Scott Adsit, Judah Friedlander, Keith Powell and Katrina Bowden.