What do you call Friday, Saturday, and Sunday? The ultimate threesome.

PUZZLE
International Rubik’s Cube Competition
What: Show off your twisty stuff or just marvel as pros and amateurs solve, solve, as fast as they can.
Why: Gleam the cube.
When: Sun., 10 a.m.-4:30 p.m.; registration, 10-11 a.m.
Where: Exploratorium, 3601 Lyon St., at Jefferson St. (415-561-0360).

VOTE
DailyCandy’s Sweetest Things 2008
What: Cast your votes for your favorite things — from bakers and bartenders to brow shapers and baublemakers.
Why: Survey says.
When: Now! Voting ends Fri. Winners announced Jan. 29.
Where: Online at dailycandy.com.

FETE
American Cheeses: the Best Regional, Artisan, and Farmhouse Cheeses, Who Makes Them, and Where to Find Them Book Party
What: Celebrate author Clark Wolf, meet featured cheesemakers, and sample the wares.
Why: Gouda, better, best.
When: Fri., 6-7:30 p.m.
Where: The Pasta Shop, 1786 4th St., Berkeley (510-250-6004). For free admission, R.S.V.P. to 510-250-6004 or e-mail events@pastashop.net.

EAT
Lilah Belle’s
What: Healthy soups, salads, and gourmet entrees at Mission takeout joint with weekly rotating menu.
Why: Belle du jour.
When: Mon.-Fri., 11 a.m.-8 p.m.; Sat., 11 a.m.-6 p.m.; Sun., 1-6 p.m.
Where: 3801 18th St., at Church St. (415-255-9473).

SHOP
Maneater Threads Going-Out-of-Business Sale
What: Score 40 percent off purchases of $100 or more and 50 percent off purchases of $150+.
Why: Get your fill.
When: Fri., 4-6:30 p.m.
Where: 101 Townsend St., at 2nd St., ste. 302 (415-777-1488).