Taking Woodstock

Demetri Martin, the standup comic with the bowl-cut and the dry wit, plays a young man in 1969 upstate New York who helps set in motion the concert that defined a generation. Ang Lee directs in a comedic changeup from ‘‘Lust, Caution’’ and ‘‘Brokeback Mountain.’’ A fascinatingly large and hairy cast, including Mr. Eugene Levy as Max Yasgur, the taciturn farmer who owned the field.

— Wesley Morris and Ty Burr, Globe Staff