The Secret Life of Walter Mitty is an uplifting crowd-pleaser
In the twenty years since Reality Bites, his directorial debut, Ben Stiller has metastasized from sketch-comedy lunatic to Generation X darling to blockbuster king. Among the funnymen, most of whom have calcified into cliques (yawn, Anchorman 2), he’s the last of the triple-threat writer-director-stars, and the only one who would…