The opening of The Vasulka Effect couldn’t be more apt: Steina Vasulka addresses her husband Woody through various TV screens. He does the same and replies. A perfect image of the relationship between the free-spirited, groundbreaking pioneers of video art. After meeting in Prague in the early 1960s, they relocated from Czechoslovakia to New York, where they later founded The Kitchen, their legendary art and performance gallery.

• Documentary