In the new romantic comedy “Maggie” (Hulu, streaming), Rebecca Rittenhouse plays a psychic who has trouble dating because she always knows how it will end. It has some funny lines and characters but keeps getting caught into the “How I Met Your Mother” trap of trying too hard to twist the plot from logical directions.    But Kerri Kenney-Silver and Chris Elliott play her parents. It’s from Maggie Mull, a writer for “Life in Pieces” whose father is Martin Mull. 

The world’s most famous wildlife host comes to public television to host a show about interesting plants internationally in the five-part BBC co-production “The Green Planet” (PBS, 8 pm., check local listings). 

Sixteen new houseguests move into a Palm Springs motel-styled house for the 24th season of “Big Brother” (CBS, 8 p.m.). Among the new cast are a Chicago bus driver, a hypnotherapist, a Vegas performer, a personal trainer and a personal stylist. Casting has been changing up to the time of the 90 minute live premiere, with the final contestant named just yesterday: a lawyer from Florida replacing a previous choice. Once more the show will air three times a week: Sundays, Wednesdays and Thursdays.

One of the best things about “Big Brother” is that they only rarely pick previously known or repeat contestants. This year, those such names — from past seasons of “Survivor,” “The Amazing Race” and “Love Island” as well as “Big Brother” — are gathered for the network debut of the all-star “The Challenge: USA” (CBS, 9:30 p.m.), a variation of the MTV reality mainstay. T.J. Lavin hosts.

From Germany comes the new “King of Stonks” (Netflix, streaming), a thriller series based in the world of finances