Everyone applauds at the end of "The Mary Tyler Moore Show" reunion episode. ( TV Land)

SERIES PREMIERE: Relic hunters Bill Ladd and Howard Hewitt scour the country in search of precious antiques in history-rich locations on the new series “DigFellas” (Travel at 8, 8:30 p.m.), starting with a town in North Carolina that’s home to one of the scariest pirates in history.

FINALE WATCH: Mel is forced to pretend to be Joe’s wife, Tiffany, given that Joe never exactly told his grandmother that Tiffany is now his ex. Not wanting to break Grandma’s heart, the duo keeps up the ruse on the summer finale of “Melissa & Joey” (ABC Family at 8), but family members sense something is amiss.

SERIES PREMIERE: Nature series “Earthflight” (WETA at 8) explores the migratory patterns of birds, using technology to have a literal bird’s-eye view of the country, from Alaska to California.

Documentary “The Flag” (CNN at 9), which looks at what happened to the U.S. flag featured in iconic photos taken at the World Trade Center on Sept. 11, 2001, is reviewed by Hank Stuever on Page C1.

FINALE WATCH: Riley’s not really into celebrating her birthday, but Ben decides to organize a surprise party anyway on “Baby Daddy” (ABC Family at 9), which, naturally, goes completely awry when disaster ensues.

RETURNING SHOW: The guys finally realize how terribly they treat their only female member, Dee, on the Season 9 premiere of “It’s Always Sunny in Philadelphia” (FXX at 10 — note the new network), and try to make amends for past mistakes.

It’s a special reunion on “Hot in Cleveland” (TV Land at 10), when Mary Tyler Moore, Valerie Harper, Cloris Leachman and Georgia Engel join regular cast member Betty White for a “Mary Tyler Moore Show” reunion. The ladies get together again when Elka decides to reunite her bowling team — known as GLOB: the Gorgeous Ladies of Bowling — after they had a falling-out years ago.

FINALE WATCH: “Futurama” (Comedy Central at 10) wraps up for a seventh and final season — the show was given a second life in 2010, after being canceled in 2003. In the real (we promise) series finale, Fry proposes to Leela, while the Professor’s latest invention could change time travel forever.

RETURNING SHOW: Just in time for football season, “The League” (FXX at 10:30 — note the new network) returns for a fifth season and kicks off with the pals traveling to Los Angeles for Andre’s destination wedding.

RETURNING SHOW: W. Kamau Bell serves as the late-night anchor for new network FXX as he’s back with a second season of his talk show, “Totally Biased With W. Kamau Bell” (FXX at 11).

— Emily Yahr