Every Tuesday, the Going Out Gurus highlight the week’s best DJs, bands, dance nights and parties. Find a longer list of events at www.goingoutguide.com.

Arbor Day Beer Festival

In honor of Arbor Day, all three locations of Pizzeria Paradiso will serve beers that have been aged with wood or matured in wooden barrels. Beer director Greg Jasgur has been putting kegs aside for months, so you’ll find rare treats from such big-time breweries as Stone, Allagash, Glazen Toren and 3 Stars. Each bar will have its own selection of beers on tap, with no overlap between locations, so check the bar’s Web site before you head out. A special pizza continues the theme — wood sorrel pesto, applewood-smoked bacon and wood-smoked mozzarella. Feel good about indulging: Ten percent of all beer and pizza sales will be donated to Casey Trees, which works to restore the District’s tree canopy.

Friday through Sunday at all Pizzeria Paradiso locations: 3282 M St. NW. DC 202-337-1245; 2003 P St. NW. 202-223-1245; 124 King St., Alexandria. 703-837-1245. www.eatyourpizza.com.

Tracks Reunion Weekend

Tracks was Washington’s first true superclub, a multi-room warehouse that welcomed thousands of people to its dance floors and outdoor volleyball court every weekend in the late ’80s and early ’90s. It was a breaker of taboos — a place where straight suburbanites found themselves dancing next to same-sex couples, while flamboyantly costumed characters grooved next to Gallaudet students who could dance to the bass vibrating through the floor. The club closed in 1999 after a 15-year run, but it’s being celebrated this weekend at three reunion parties:

On Friday at DC9, DJs Mohawk Adam, Earic Patten, Michael Meachem and Mike Kangal will spin their favorites from Track’s Thursday and Friday nights, which focused on industrial, techno, goth and college tunes. 9 p.m. at DC9, 1940 Ninth St. NW. 202-483-5000. $10.

On Saturday, Town will host two events. The first is a reunion mixer from 6 to 10 p.m., with a display of club memorabilia, a speech by Tracks owner Marty Chernoff and a silent auction. Then, from 10 p.m. to 4 a.m., DJs Tim Sheehan, James Graham, Michele Miruski and Ed Bailey will try to re-create the vibe of Tracks’ legendary Saturday gay parties. Town Danceboutique, 2009 Eighth St. NW. 202-234-8696. Mixer admission: $10. Dance party admission: $10 before 11 p.m. and $12 after.

And on Sunday at Phase 1, DJs Mike Malapit, Geoffrey Cee, Michele Miruski and Sam Burns will revive the Tracks Sunday Night party, which catered to a gay African American crowd. 9 p.m. at Phase 1 of Dupont, 1415 22nd St. NW. 202-974-6832. $10.

All events are expected to be packed, and advance ticket purchase is recommended. Proceeds will be donated to Washington charities, including House of Ruth, the Whitman Walker Clinic, Us Helping Us and the Mautner Project. For more information, visit www.tracksdc.com.

Olde City Sideshow

For fans of old-school sideshow and vaudeville, there are few acts as entertaining as Philadelphia’s Olde City Sideshow: a troupe of daring men and women who swallow swords, stub cigars out on their tongues, hammer nails up their noses and wipe their tears with broken glass. You won’t be able to tear your eyes away, even if you want to, especially during the bullwhip tricks. They’re making the trip down I-95 to perform at one of the Bier Baron’s new variety nights.

Saturday at 7:30 p.m. The Bier Baron, 1523 22nd St. NW. 202-293-1887. www.bierbarondc.com. $10 in advance, $12 at the door.

— Fritz Hahn