Photo by Rudi Riet.

GUESSES: Watch three comedians try to guess one scientist’s expertise during a live taping of “You’re the Expert.” DC Improv (1140 Connecticut Avenue NW) 8 p.m. $20.

DYSFUNCTION: Watch “villains, lunatics, and sweet little old ladies form the ultimate dysfunctional family” in an outdoor performance of Arsenic and Old Lace. Dumbarton House (2715 Q Street NW) 6-8:30 p.m. $12

BALLET: NoMa BID screens Flashdance. Storey Park (1005 First Street NE) Movie begins at sunset. Freecreens