John C. Reilly enjoys mainstream appeal in big-studio comedies (Talladega Nights, Step Brothers, Cedar Rapids), yet he’s consistently sought out and greatly enlivened an impressive number of small, idiosyncratic projects (Year of the Dog, The Promotion, Cyrus). His performance as a shambling but cagey high school principal is among the many pleasures of this emotionally acute indie comedy by Azazel Jacobs (Momma’s Man). The title character (Jacob Wysocki), a tall and hulking 15-year-old, is tormented at school and burdened at home as sole caregiver to an uncle with Alzheimer’s. When the depressed boy starts showing up at school in his pajamas, the principal decides to take him in hand, but as they begin meeting in his office, the older man turns out to be every bit as odd and introspective as Terri. Jacobs has a sure feel for the misfits of the world, and a later subplot involving Terri with the school slut (Olivia Crocicchia) and a rancid little troublemaker from the principal’s office (Bridger Zadina) is alternately painful and hilarious.