Brother Knows Best Poster Brother Knows Best Amazon » eBay » The film "Brother Knows Best" is a 17 minute comedy from 1948.. Brother Knows Best Details Title: Brother Knows BestYear: 1948Genres: ComedyDuration: 17m Rate this title Have you seen Brother Knows Best? Rate it between 1 to 10 below. Log in to your account if you want to rate this title.