A look ahead at a week of Cambridge and Somerville events brings the Once in Valhalla 10-course feast, followed Sunday by free chili cook-offs in both cities, as well as an evening with Sutton Foster in Sanders Theatre, the return of “Medusa: Reclaiming the Myth” and much more.

In a look ahead at a week of Cambridge and Somerville events, there’s the dystopian dance musical “iTMRW” and “Das Kapital” play performance, opera with “Aida” and more, and “Somerville Night Live.” It all starts with an MLK flash mob dance on the Monday holiday.

In a look ahead at a week of Cambridge and Somerville events, Passim celebrates The Songs of 1970, the One Night Band and Giving@First 24-Hour Play challenges return, Co-Incidence Fest is heard again and there’s plenty of poetry and comedy coming.

In a look ahead at a week of Cambridge and Somerville events, there are Winter Wonder popup dance performances, New Year’s Eve music and comedy, followed by New Year’s Day comedy with local standups and the Marx Brothers, and much, much more.

In a look ahead at a week of Cambridge and Somerville events, there are public holiday parties as well as ongoing theater experiences for kids (“Thumbelina”) and adults (“Slutcracker” and its Slutmas Eve) and a Thriftmas Party Fashion Show to see out the season.

There are a lot of adjectives one could apply to this musical adaptation of “Moby-Dick,” but “boring” would not be one of them. Much of it works, but how well it works depends on your appetite for audience participation, juvenile humor and extended musical jams.

There’s a wonderful kinetic quality to this “Christmas Carol” – it’s always moving, and always has a rhythm for you to jump in step to. You feel like you can reach out and get ahold of it, in part because little attempt is made to hide the theatrical “magic” in the story.

In a look ahead at a week of Cambridge and Somerville events, there’s storytelling, poetry and music (including Blue Heron’s new “Baroque Christmas” program), but also plenty of holiday shopping, dance and skating (including a “Chanukah on Ice”).

In a look ahead at a week of Cambridge and Somerville events, the holidays have arrived in force, with a Christmas Cavalcade, Holiday on Ice, Klezmer Christmas and the like joining a ton of offerings in poetry, music and theater, much of it free.

In a look ahead at a week of Cambridge and Somerville events, there are returning theater events such as “Club Drosselmeyer 1942” and “The Slutcracker,” an ice sculpture stroll, a snow globe workshop and Trashion show, tons of poetry and music, and more.