“Call Me Lucky” is director Bobcat Goldthwait’s affectionate—and highly affecting—portrait of curmudgeonly comedian/activist Barry Crimmins. This documentary is, like most of Goldthwait’s work, funny and disturbing. After comedians like Patton Oswalt, David Cross and Kevin Meaney talk about Crimmins’ talent for being a rude, funny, obnoxious truth-teller, there is a revelation that puts the comedian’s story in a whole different perspective.