What To Watch Tonight? Tonight’s Top Pick to Watch is the season 1 finale of Flack on Showtime. This is a repeat of the Season 1 finale which originally aired on POP TV back in 2019. No matter where you watch Flack, just make sure you watch it! Also, a crossover event on Hawaii Five-0 and Magnum P.I. Check out all of our picks for the night below. What are you watching tonight?