The Biograph Theater features the Washington premiere of the Soviet film "Jazzman" Friday, Saturday and Sunday at 8:15, part of the Biograph's eight-week Soviet film festival . . . The Levine School of Music presents "An Evening of P.D.Q. Bach," with refreshments to complement the music at St. Alban's Trapier Theater, Saturday at 8. $20, $10 for seniors and students. Call 337-2227 . . . The Washington Performing Arts Society presents an afternoon with Charlton Heston, Billy Taylor and the Colorado Philharmonic Orchestra in honor of the 20th anniversary of the National Endowment for the Arts, Sunday from 3 to 5 at the Kennedy Center. Tickets range from $5 to $21.50. Call 432-0200.
St. George Greek Orthodox Church, 7701 Bradley Boulevard in Bethesda, holds its 17th annual Greek Village Festival and Agora Friday, Saturday and Sunday from noon to 9. Free admission. 469-7990 . . . The Potomac Valley Dressage Association's 20th annual dressage competition, with more than 700 horse and rider demonstrations, is this Saturday and Sunday from 8 to 6 at the Prince George's Equestrian Center in Upper Marlboro. Free admission. Call 484-1542 or 983-2994.
Big Band music with Tom Cunningham and the WRC-980 Orchestra moves to the Holiday Inn in Fair Oaks this Friday at 9. $8. 256-2734 . . . The Occoquan Craft Show in Occoquan is this Saturday and Sunday, 10 to 6. Free admission. 703/680-5466 . . . The Mill Run Dulcimer Band plays a free concert Sunday at 7 p.m. at Westminster Presbyterian Church, 2701 Cameron Mills Road, Alexandria. 549-4766.