THE BEST THING about studying history is challenging assumptions and preconceived notions. The documentary “Far East Deep South” follows a Chinese-American family as they search their ancestral roots, a trip that takes them to the most unlikely place: The Mississippi delta. There they discover that their relatives were hardly alone and that they were part of a complicated story of Chinese immigrants in the South in the years before integration.

“Far East Deep South” streams on the World Channel PBS app and arrives just more than a week after the Academy Awards ceremony recognized the 2020 drama “Minari,” a tale of a Korean family in Arkansas.

A creation of PBS Boston affiliate WGBH, the World Channel is available on some cable systems and can be streamed as World Content on the PBS app via Amazon Fire TV, Apple TV and Roku.

Other PBS streaming apps include All Arts. Developed by WNET, the New York PBS affiliate, All Arts offers a vast library of arts-related series and documentaries both contemporary and deeply archived.

You can watch recent installments of “Great Performances” and “American Masters” as well as vintage classical music performances and interviews with artists including Edward Hopper and profiles of Keith Haring, dating back decades. It’s free and can be accessed without any cable subscription verification. It’s a real hidden gem.

• In a world without wit, bludgeoning noise and pointless violence reign supreme. Disney+ launches the animated series “Star Wars: The Bad Batch.”

To celebrate another arrival in the ever-expanding Lucas empire, TNT airs the 1983 adventure “Star Wars: Return of the Jedi” (7:30 p.m., TV-PG). This was the last of the original three “Star Wars” movies released in theaters before a long hiatus was broken in 1999 with the release of “The Phantom Menace.” BBC America chimes in with two helpings of “Spaceballs” (8 p.m. and 10 p.m., TV-PG), the 1987 parody directed by Mel Brooks.

• A goofy adaptation of Homer’s “The Odyssey” featuring a tale of chain-gang fugitives (George Clooney, John Turturro, Tim Blake Nelson), the 2000 Coen Brothers comedy “O Brother, Where Art Thou?” (8 p.m., AMC, TV-14) yielded a best-selling soundtrack of roots music and contemporary interpretations. The film’s title refers to a movie Joel McCrea’s character is researching in the 1941 Preston Sturges comedy “Sullivan’s Travels.”

Other highlights

• A day off proves eventful on “The Resident” (8 p.m., Fox, TV-14).

• Contestants must groom their dogs to resemble celebrities on “Pooch Perfect” (8 p.m., ABC, TV-PG).

• “Finding Your Roots With Henry Louis Gates, Jr.” (8 p.m., PBS, TV-PG, check local listings) concludes its seventh season with interviews with comics Lewis Black and Roy Wood Jr.

• Jubal’s emotions cloud his judgment on “FBI” (9 p.m., CBS, TV-14).

• A reunion proves complicated on “This Is Us” (9 p.m., NBC, r, TV-14).

• A race against time on “Prodigal Son” (9 p.m., Fox, TV-14).

• A fight for probation reform on “Philly D.A.” (9 p.m., PBS, TV-PG, check local listings).

• A cop-killer’s story makes things complicated on “FBI: Most Wanted” (10 p.m., CBS, TV-14).

• Max confronts the hospital’s past on “New Amsterdam” (10 p.m., NBC, TV-14).

• The motel is left in ruins on “Big Sky” (10 p.m., ABC, TV-14).

• As legal woes mount, Kate finds an unlikely ally on “Cruel Summer” (10 p.m., Freeform, TV-14).

Cult choice

An enthusiastic teen (Ricki Lake) doesn’t let her size deter her dreams or her efforts to integrate Baltimore’s local “Bandstand”-like TV dancing showcase in the 1988 comedy “Hairspray” (8 p.m., TCM, TV-14), also starring Divine, who died three weeks after its debut. Co-stars and cameos include Jerry Stiller, Sonny Bono, Debbie Harry, Pia Zadora and Rick Ocasek. A hit that brought mainstream acceptance to shock-value director John Waters, “Hairspray” remains one of the few movies to mine the civil rights era for laughs.

Series notes

Gibbs testifies against a swindler on “NCIS” (8 p.m., CBS, TV-14) ... On two helpings of “Young Rock” (NBC): memories, (8 p.m., TV-14); painful discoveries (8:30 p.m., r, TV-PG) ... Getting frosty on “The Flash” (8 p.m., CW, TV-PG).

Dre might be behind the curve on “black-ish” (9 p.m., ABC, r, TV-PG) ... Memories of Kara’s first brush with Kryptonite on “Supergirl” (9 p.m., CW, TV-PG) ... Bow finds religion on “mixed-ish” (9:30 p.m., ABC, r, TV-PG).

Late night

Jimmy Fallon welcomes Andrew Garfield, Sara Bareilles, Renee Elise Goldsberry, Paula Pell, Busy Philipps and Thomas Rhett on “The Tonight Show” (11:35 p.m., NBC) ... Pete Davidson, Jodie Turner-Smith and George Saunders visit “Late Night With Seth Meyers” (12:35 a.m., NBC).

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