The Fundamentals of Caring is a 2016 comedy-drama film in which Paul Rudd plays the role of Ben, a caregiver who forms an unlikely friendship with a teenager with muscular dystrophy. The film explores themes of friendship, empathy, and personal growth. Paul Rudd's performance brings warmth and humor to the character, creating a heartfelt and touching story. The Fundamentals of Caring is a heartwarming film that showcases Rudd's versatility as an actor.