This week’s new movies include Dustin Hoffman’s directorial debut about a home for aging musicians and a documentary about former Cream drummer Ginger Baker. Here’s what the Post critics had to say: *** ” Quartet ” (PG-13) “Smoothly navigating the perilous line between insufferably twee and heartbreakingly grim, ‘Quartet’ is a subtle, sure-footed delight — made all the more enjoyable by the …
