This Museum of Fine Arts, Houston exhibition sheds light on a still lesser-known chapter of 20th-century art. The show features more than 150 Czech avant-garde works amassed by Houston philanthropists Roy and Mary Cullen, including outstanding examples from the flowering of Czech Surrealism, rare artists' books and avant-garde periodicals and exquisitely molded and blown modern glass. New Formations is on view through Feb. 5, 2012.