SERIES PREMIERE: WEtv launches a new programming block on Friday night, starting with the return of “Bridezillas” (at 8), following some delightful women getting ready for the big day — in the Season 10 premiere, a bride-to-be battles with her wedding planner/mother-in-law. At 9, spinoff “Marriage Boot Camp: Bridezillas” debuts with five of the most memorable women from the show for some relationship counseling, including Washington’s own Danni Starr (co-host of syndicated radio program “The Kane Show”) and her husband. Finally, it wraps up with new docu-series “Pregnant & Dating” (at 10), which follows single future moms looking for love.

Documentary “Richard Pryor: Omit the Logic” (Showtime at 9) profiles the iconic comedian, and has interviews with everyone from George Lopez to Mike Epps to Bob Newhart, who talk about his influence on comedy. The film, co-exec produced by his widow, Jennifer Pryor, made its debut in April at the Tribeca Film Festival.

Some people call them treehouses, others prefer “arboreal getaways,” apparently. In any case, “visionary and tree whisperer” Pete Nelson designs elaborate escapes for people on the new docu-series “Treehouse Masters” (Animal Planet at 10).

RETURNING SHOW : Bridal expert Randy Fenoli is back with “Randy to the Rescue” (TLC at 9), helping brides get ready and find the perfect gown. In the Season 2 premiere, he starts in Los Angeles as he helps a bridal magazine publisher who’s obsessed with a unique dress.

FINALE WATCH: Fantasy drama “Merlin” (Syfy at 10) already wrapped in Britain, but it ends in the United States on Friday night. Merlin takes on Morgana, who wants to destroy not only King Arthur, but all of Camelot.

Stand-up special “Sommore: Chandelier Status” (Showtime at 10:30) features comic Sommore at a show in Miami, as she riffs on everything (with what the network calls her “sexy brand of humor”) from gifts to body alterations.

The team on “Vice” (HBO at 11) looks into a Senegalese style of wrestling, and later, investigates the impact of what will happen if sea levels in Venice and the Maldives continue to rise over time.

— Emily Yahr