Hey, big daddy. This weekend’s for you.
U.S. Rubik’s Cube National Open
What: Watch or participate in the Midwest’s first national speed-cubing contest.
Why: Lube your cube.
When: Sat. Registration, 10-11 a.m.; preliminary rounds, 10 a.m.-6 p.m. Sun., competition, 10 a.m.-6 p.m.
Where: Chicago Cultural Center, Randolph Cafe, 77 E. Randolph St., at Michigan Ave. (312-744-6630).
What: Sheffield’s new Backroom BBQ menu has pulled pork, baby back ribs, brisket, and more.
Why: Light his fire.
When: Sun. In his honor.
Where: 3258 N. Sheffield Ave., at School St. (773-281-4989).
Samantha Chicago Biannual Sale
What: Half off spring and summer dresses, tops, and denim from AKA New York, Catherine Malandrino, Milly, Theory, and more.
Why: Sale away, sale away.
When: From Fri. till everything’s gone. Mon.-Sat., 10 a.m.-6 p.m.; Sun. noon-5 p.m.
Where: 64 E. Walton St., b/t Rush St. & Michigan Ave., 1st flr. (312-951-5383).
Chicago Dance Showcase
What: Local companies (including Chicago Human Rhythm Project and Luna Negra Dance Theater) perform in a free showcase.
Why: Dance dance revolution.
When: Fri., 7 p.m.
Where: The Dance Center of Columbia College Chicago, 1306 S. Michigan Ave., at 13th St. (312-344-8300).