A movie about a wisecracking grandma and her teen granddaughter, racing around in a beat-up car to find $600 by nightfall. You might think it sounds like any number of mediocre road comedies out there, full of trite generational gags and sporting a sappy, all-is-forgiven ending.
You'd be very wrong.
"Grandma" is, instead, a brisk, bittersweet and moving film, rightfully devoted to displaying the singular talent of Lily Tomlin - especially her striking ability to fuse acerbity and crankiness with . . .
