Netflix has a pretty satisfying selection of fresh movies to choose from in September. That includes The Rookie, an action flick from 1990 that was overshadowed by Home Alone during its time in theaters. The Watch With Us team has picked The Rookie as part of our underrated Netflix movies that you need to watch in September. You can find the remaining three choices below, including the adaptation of a beloved children's novel, an unconventional World War II flick and a movie that's beloved by fans of all ages.