A beautifully understated indie dramedy, “Brigsby Bear”, directed by Dave McCary and produced by The Lonely Island, is a heartfelt and poignant paean to the importance and power of fandom. When James (Kyle Mooney) finds out that his whole life has been a lie concocted by his kidnappers Ted and April Mitchum (Mark Hamill & Jane Adams) he finds adapting to normal life a real struggle, especially…