It’s Janet. Ms. Jackson if you’re nasty.SWEATRhythm Nation Dance ClassWhat: The choreographers behind Bay Area Flash Mob teach the step-by-step routine from Janet Jackson’s epic 1989 video at UCSF on Thursdays and Sundays through December.Why: Your childhood dream come true.When: Today, 7-9 p.m.; Sun., 11 a.m.-1 p.m.Where: 400 Parnassus Ave., b/t 3rd & Hilway Aves. (415-518-5510).TRYArtastingWhat: Celebrate the city’s most delicious neighborhood at this annual event, with wine tastings, free cupcakes from Mission Minis, a $2 taco bar, cooking demos, and tamales from the one-and-only Tamale Lady.Why: Follow @ARTdeezine on Twitter for $5 off admission.When: Sat., 5-9 p.m.Where: Sub Mission, 2183 Mission St., b/t 17th & 18th Sts. (415-828-1618). Tickets ($20) at eventbrite.com.TREKWilkes Bashford Trunk Show at Ma(i)sonryWhat: Experience fashion, food, and wine at the one-day trunk show of luxury Italian sportswear line Brunello Cucinelli.Why: A reception hosted by Blackbird Vineyards, with food from Michael Chiarello’s Bottega restaurant.When: Sun., 11 a.m.-3 p.m. Where: 6711 Washington St., at Burgundy Way, Yountville (707-944-0889). R.S.V.P. at maisonry.com.GEEK OUTGadgets and Gizmos for TechiesWhat: Our definitive holiday gift guide to the latest and greatest, including a 3-D camcorder, remote-operated lantern, wooden watch, and retro iPhone dock.Why: Get your hands on hi-fi, lo-fi, and everything in between.When: Before you crash.Where: Online at dailycandy.com.PAIRGrand Cafe’s Tour de FranceWhat: The first of four regional dinners ($42) celebrates Bordeaux. The three-course menu includes foie gras with black truffle and plum chutney, and Sonoma duck breast with orange and cognac.Why: Pair with the area’s full-bodied wines for an additional $20. When: Thurs. & Sun., 5-10 p.m.; Fri. & Sat., 5-11 p.m.Where: 501 Geary St., at Taylor St. (415-292-0101).CELEBRATEMamacita’s Fifth Anniversary PartyWhat: To mark its half-decade milestone, the Marina favorite will offer everything on the menu, from chilaquiles to tacos to enchiladas, for $5.Why: More money to spend on those famous margs.When: Wed., 8 p.m.-midnight.Where: 2317 Chestnut St., at Scott St. (415-346-8494).Photo: Wayne Wilson / Getty ImagesUp to 55% off Felix ReyCure wardrobe boredom with a glam handbag from Felix Rey at up to 55% off. While you’re at it, prevent holiday blues by delving into Swirl’s first-ever gift sale.