Five things to do, Jan. 15-21

An MLK tribute

Monday, January 15

Boston University honors the legacy of one of its most prominent alumni with words and music at the annual Martin Luther King Jr. Commemoration. This year’s theme is “Words Beyond the Dream,” a closer look at King’s orations before and after the 1963 “I Have a Dream” speech. 2 p.m. at the George Sherman Union. Free. bu.edu

Hemisphere of Influence

Opening Tuesday, January 16

With an emphasis on video and lots of pieces in other media by artists from Latin America and the United States, A Decolonial Atlas: Strategies in Contemporary Art of the Americas questions colonialism and whether we live in a post-colonial age. At the Tufts University Art Gallery through April 15. Free; $3 suggested donation. artgallery.tufts.edu

Virtue and Vice

Wednesday, January 17

Whether your new year’s resolution was to eat more superfoods or more desserts, the cast of America’s Test Kitchen has you covered. Jack Bishop, Julia Collin Davison, and Bridget Lancaster chat about and sign the 2017 cookbooks Nutritious Delicious and The Perfect Cookie at the Brattle Theatre. 6 p.m. Tickets $5 (includes a $5 Harvard Book Store coupon), $30.50 (includes Nutritious), or $34.75 (includes Cookie). harvard.com

Honestly

Saturday, January 20

Get a jump on Presidents’ Day when Pulitzer Prize-winning playwright Tony Kushner and popular historian-slash-NPR favorite Sarah Vowell discuss The Lincoln Legacy at Sanders Theatre. Best known for Angels in America, Kushner also wrote the screenplay for Steven Spielberg’s Lincoln. Harvard professor John Stauffer, a Civil War scholar, moderates. 8 p.m. Tickets start at $30. celebrityseries.org

Funny Guy

Saturday, January 20

One of the breakout stars of Cambridge’s legendary 1980s comedy scene, Lenny Clarke has made his mark in sitcoms and movies but always returns to his home turf. His Lenny Clarke & Friends show plays Lexington’s Cary Hall. 8 p.m. $36. caryhalllexington.com