The Washington Improv Theater presents a rotating lineup of "frightfully funny" skits for its "Scary Funny" Halloween weekend, all concluding with "Die! Die! Die!," a spoof of slasher movies, improvised right on stage. Also playing for select shows: "iSpooksical," an unscripted musical in the key of horror, a spooky sketch comedy called "Brick Penguin" and "Sistine Robot: But Wait, There's Horror," which takes a dark look at the advertising business. Friday, Oct. 28, and Saturday, Oct. 29, at 11 p.m., and Sunday, Oct. 30, and Monday, Oct. 31, at 8 p.m. Source, 1835 14th St. NW. Tickets are $10 for each show. Call 202-204-7760 or visit washingtonimprovtheater.com.