A new kids’ musical, “The Light Princess” 10 a.m. Saturday and Sunday at the American Repertory Theater at Harvard University, 64 Brattle St., Harvard Square.

This whimsical new children’s musical is based on the short story by George MacDonald, telling of a princess cursed to not have any gravity. The king and queen must find the princess’ gravity before her 16th birthday or the kingdom will fall into the hands of the witch that cursed her. This world premiere is written for all ages. The show runs through Jan. 5. Tickets are $15.

Uncle Petey’s Christmas Comedy Spectacular! at 8 p.m. Saturday at the Davis Square Theatre, 255 Elm St., Somerville.

Petey Gibson (best known for her filthy and geriatric Mary Dolan character) brings together comedians from around the country for this show, including the Walsh brothers (of Comedy Central video fame), Sean George (of the Pizza Box Sessions podcast), James Patterson, Jenny Zigrino and Julee Antonellis, with music by Lainey Schooltree (of Schooltree and The Steamy Bohemians). It’s a good thing the Walsh brothers are part of this and that there’s so much other talent involved, since The Comedy Studio’s annual holiday show, taking place the next night in Harvard Square, is already sold out. Tickets to Uncle Petey’s are $15.

http://www.youtube.com/watch?v=21gb49H-Uo4

“The Wicker Man Resurrected” at 9 p.m. at the Harvard Film Archive at The Carpenter Center, 24 Quincy St., Harvard Square.

First, the traditional warning about the 2006 remake with Nicolas Cage: Don’t mistake this 1973 masterpiece starring Christopher Lee with that weird trip to camp. But even for aficionados of horror who don’t need that warning, there are still things to discover about “The Wicker Man” – including that the version they know of this cult classic is not what director Robin Hardy wanted filmgoers to see. His film was 99 minutes long; what most people saw, thanks to a nervous studio, was 88 minutes long. This recently rediscovered edit gets closer to Hardy’s vision at 92 minutes. (The hunt goes on for a full-length set of reels.) Tickets are $9, or $7 for non-Harvard students, Harvard faculty and staff and senior citizens (regular HFA screenings are free for all Harvard students with a valid photo ID).

The archive also screens its 5th Annual Vintage Holiday Show at 3 p.m. Sunday – a free, 90-minute break from shopping with mystery contents from the collections that includes animation, puppets, live action and documentary material, some Christmas-oriented, some not, all family-friendly.

“Considerable Disadvantage: The Quiz Show for Assholes” at 11 p.m. Saturday at ImprovBoston, 40 Prospect St., Central Square.

This third episode of the live action game show combines trivia questions, small games and mild personal attacks – British style, according to producers Gwen James, Nick Garner and Joseph Canadas. This week’s jerk panelists (culled from area comedians, musicians and bon vivants) are Will Smalley and Andrew Mayer; Ellie Race-Moore and Sam Kusek; and Caleb Cole and Tee Jay. Tickets are $10.

A Brendan Burns Quartet at 5:30 p.m. Sunday at Lilypad, 353 Cambridge St., Inman Square.

The residency of Brendan Burns – tireless musical inspirer, adventurer and instigator (part of the duo who wrangled more than 150 performers to interpret Beck’s “Song Reader” album live in Davis Square in February) – continues with new and original music performed with Raky Sastri on drums, Tony Leva on upright bass and Pete Danilchuk on keyboards. Tickets are $10.