The weekend’s best in nightlife, music and art. For even more, check out Nightlife Agenda.

Tiesto brings his floor-shaking set to Echostage on Friday and Saturday. (Doug Van Sant Photography)

Friday: The Newseum marks the 50th anniversary of the assassination of President John F. Kennedy on Friday with JFK Remembrance Day, with gallery talks, panels and film screenings. The event, which is free with museum admission, also includes a chance to see 90 minutes of vintage CBS News footage of the events of Nov. 22, 1963.

Friday: Beaujolais Nouveau celebrations don't get much classier than Beaujolais and Beyond, an event the Alliance Francaise and French-American Chamber of Commerce are throwing at the French Embassy's La Maison Francaise. Snack on food from local French restaurants, drink unlimited wine (with non-Nouveau selections from France, Italy and the U.S.), participate in a blind wine-tasting contest, test your smarts in a trivia contest or dance to a DJ in the ballroom. The evening has a Roaring '20s theme, so dress accordingly. General admission tickets are $60; get them here.

Friday-Saturday: Tiesto, the world's biggest trance DJ has expanded his repertoire in recent years, adding dubstep and electro to his high-energy sets, several of which have been released as part of his "Club Life" live series. The Dutchman still fills soccer stadiums and festivals around the world, so expect two packed nights at Echostage, the city's largest dance club. Tickets are $50, and they're sold out, but tables were still available at press time.

Friday-Sunday: "American Voices," the Kennedy Center's three-day festival of songwriting and musicianship is a chance to see masters at work. Watch Alison Krauss, Dianne Reeves, Eric Owens, Ben Folds and others coach young artists during the weekend's "master sessions," or catch their performance together with the National Symphony Orchestra during an all-star concert Saturday at 8 p.m. The handful of remaining tickets for the American Voices concert are $29-$225 and can be had here.

Saturday: The Quidditch Mid-Atlantic Regional Championship is real, and this weekend, the game loved by Harry Potter and the rest of the young wizards at Hogwarts comes to the muggle world. Some minor changes have been made (sorry folks, no one goes soaring through the air) for Saturday's game at Loudoun County's soccer park in Leesburg, but the familiar snitches, bludgers and quaffles abound. For this event, 23 teams -- including representatives from University of Maryland and the University of Virginia -- will compete for the chance to go to the World Cup. In addition to cheering on the teams, children can tryout kidditch, a non-contact version of the game.

Saturday: It's fitting that H Street NE, long a scenester outpost where a tattoo and excellent mustache can serve as kind of a passport, is playing host to a Movemberfest festival. Purchase a wristband to take advantage of food and drink specials at 13 bars and restaurants on the strip from 1 to 9 p.m., including the H Street Country Club, the Argonaut, Cusbah and Dangerously Delicious Pies. There will be free activities for kids at the Big Board and a late-night dance party with the funky Sinister Sound Set at the new RedRocks. All proceeds from ticket purchases benefit Movember and its partners, the Prostate Cancer Foundation and Livestrong. Buy tickets online to save $3, then pick them up Saturday at Big Board or the Queen Vic.

Sunday: Rapper Danny Brown has been the darling of critics for only a couple of years, when the Detroit native with the idiosyncratic nasal flow, skinny jeans and shock of hair caught the rap world on fire with "XXX." But it's funny the difference time makes; the one-time raunch king -- who was embroiled not that long ago in a controversy involving an on-stage sex act -- has mellowed considerably on his new album, "Old," in which he's reflective about a world that wants him to never change. After a sold-out show at the Rock & Roll Hotel this spring, he's moving to bigger digs, the Howard Theatre, on Sunday.

Sunday: Jake Shimabukuro's unique ukelele style draws from classical, flamenco and even rock guitar techniques to create songs that alternate between gorgeous and jaw-dropping. In concert, Shimabukuro sometimes uses special effects to loop his ukelele and perform with himself, but even when there's no electronic trickery, his instrument produces a beautiful and compelling sound. See him at Lisner Auditorium on Sunday; get tickets, priced at $35, here.

Through Jan. 5: Can we officially get in the holiday spirit? Last week, Ice! officially returned to National Harbor, and there's o better time than now, before the post-Thanksgiving crush, to check out this temperature-controlled world in which nearly everything from the nativity to a functioning slide is carved from cold stuff -- two million pounds of it, in fact. The effect is glittering, and, despite the exhibit-issued parka, punishingly cold. (It’s just 9 degrees inside the tent.) This year, exhibit’s rooms tell the story of the theme of “The Night Before Christmas.”