- Chromeo (Facebook/Chromeo)
• Becky's Sorority House Massacre II at Rock and Roll Hotel. Kick off Halloween weekend with DJs Stereo Faith and Trevor Martin. Free. 9:30 p.m. 21+.
• Sex and Education opens at Cultural Arts Center in Silver Spring. The comedy by Lissa Levin premiered in 2009 at the Kennedy Center Page-to-Stage Festival, with a run at Capital Fringe in 2010. The one-act play, featuring a high school basketball star and his English teacher, tells the story of how sex and syntax create lessons in life.
• Shawn & Marlon Wayans at DC Improv. The brothers and stars of Scary Movie, White Chicks and The Wayans Bros perform stand-up. Fri.-Sun.
• SCARY FUNNY: Brick Penguin and Die! Die! Die! at Source Theatre. A frightful weekend of chills and laughs, presented by Washington Improv Theater. Fri. & Sat. 11 p.m. Sun. & Mon. 8 p.m.
• Friday Night Eclectic: Rock, Paper, Zombies at Strathmore Mansion. What better way to start off a snowy Halloween weekend than a party with elephants, drumming rats and bear people? This night will make you forget the difference between the real and the surreal. 8 p.m. $12 door, $10 presale.
• Chromeo at Fillmore Silver Spring. The Montreal-based, electro-funk-pop duo of Patrick Gemayel "P-Thugg" and David Macklovitch "Dave 1" dropped their latest album, Business Casual, an '80s-inspired fusion, in 2010. On the album, P-Thugg says, "We started, basically, just trying to fill a hole that nobody had filled in years. Just paying homage to the early-to-mid-eighties stuff ,music that people usually categorize as kind of disposable, not as high-brow or as sophisticated." 8 p.m. $25 - $30.
• Saturday Night premieres at Signature Theatre. Stephen Sondheim's romantic comedy is set on the eve of the 1929 stock market crash, with a group of guys bemoaning their inability to find a date on Saturday nights. Sat. & Sun. 2 p.m. & 8 p.m. $40.
• Monster Mash II at Garfield Park. A day of costumes, skating demonstrations and music. Invited artists, including Nebsi, DECOY, Jazi, and Dahm, will be painting a section of a wall surrounding "The Bridge Spot." 10 a.m. - 5 p.m. Free.
• Opening reception: Secrets of the Elements 3: Dark Matters at Studio Gallery. The solo show, a collaboration between chemist-artist Langley Spurlock and poet John Martin Tarrat, explores elements on the periodic table. In this third chapter, Chlorine, Mercury, Oxygen, Silicon and Xenon, are among the 27 elements used to explore the questions that are still unanswered in our world. 4 p.m. - 6 p.m.
• ROCKtoberFete: Into the Woods at Wolf Trap. Join Club 66 at this party supporting the arts, with a special performance by Matt Pond PA, dancing, hors d'oeuvres, open bar and a silent auction. 7 p.m. $75.
• Manassas Symphony: A Symphonic Spooktacular at Hylton Performing Arts Center. 7:30 p.m. $15. Students & Children, Free.
• Night of the Living Dead at Jammin' Java. The songwriter's circle features Shane Hines, Todd Wright, Anthony Fiacco, and Luke Brindley. 7 p.m. $15.
• Lecture: Leonardo da Vinci: Artist of Sketchbooks and Notebooks at National Gallery of Art.
• Monster Mash with DJs Matt Rose, Chris Nitti and Will88 at Rock 'n Roll Hotel. Free. 21+.
• SCARY FUNNY: Sistine Robot: But Wait, There's Horror at Source Theatre. 8 p.m. $10.
• Jeffrey Eugenides, author of the Pulitzer Prize-winning Middlesex discusses his latest book, The Marriage Plot at Sixth and I. 7 p.m. $12 advance, $15 door.
• Halloween on Screen: The Raven and Vincent at AFI Silver Theatre.