[This is a re-post of my review from the 2014 Sundance Film Festival.  Frank opens today in limited release.] “He’s the sanest person I’ve ever met,” band manager Don (Scoot McNairy) tells keyboardist Jon (Domhnall Gleeson) about their lead singer …

When you cast Michael Fassbender as your title character, the last thing you’d probably think to do is put a giant mask over his head so you can’t see his face throughout the film, but that’s exactly what director Lenny …