“A Happening Of Monumental Proportions” (** out of four) was a tepid comedy about a various group of parents and school workers (Common, Allison Janney, Jennifer Garner, Bradley Whitford, and others) who become mired up in a plot involving sex, dead bodies, and a sabotaged coffee machine! Occasional laughs but story becomes overly silly and contrived after a while leaving its talented cast high-and-dry. Keanu Reeves has an amusing cameo near the end. This marks actress Judy Greer’s directorial debut.