Sinbad, ‘Bert Fershners’ and ‘Rough Riders’ on Schedule

There are several new specials airing this weekend, running the gamut from documentaries to a ‘70s musical flashback.

The Learning Channel’s “TWA Flight 800,” tonight at 7 and 10, offers a comprehensive look at the explosion and crash of the Boeing 747 a year ago today off the coast of Long Island and the continuing investigation.

A&E;’s “Investigative Reports: Untying the Straitjacket,” Saturday at 6 and 10 p.m., travels inside two of the country’s highest-security mental hospitals.

The popular comic Sinbad headlines his fourth HBO comedy special, “Sinbad: Nothin’ but the Funk,” Saturday at 10 p.m. He returns Sunday to HBO with his music special, “Sinbad’s Summer Jam 3: ‘70s Soul Music Festival,” at 9 p.m. The BarKays, Cameo, George Clinton and the P-Funk All-Stars and the Isley Brothers are among the guests.

Comedy Central offers “Bert Fershners,” Saturday at 11 p.m., a sketch comedy-concert starring a seven-member New York troupe.

The HBO documentary “Hookers at the Point: Goin’ Out Again,” Saturday at 11 p.m., is a follow-up to last year’s “America Undercover” documentary on prostitution. It visits a Bronx neighborhood overrun with drugs, crime and streetwalkers.

The History Channel’s “Crimes in Time,” Sunday at 6 and 10 p.m., features four crimes that tell the story of the era, including a man who stole the “Mona Lisa” in 1911 for revenge, and Butch Cassidy and the Hole in the Wall Gang.

Other weekend fare:

Friday

HBO’s “World Championship Boxing,” at 6 p.m., features Danny Romero and Johnny Tapia battling for the junior-bantamweight title. Jim Lampley, Larry Merchant and George Foreman will be at ringside in Las Vegas.

The Cartoon Network’s quirky animated talk show, “Space Ghost,” returns at 8 p.m. with a new season of 24 episodes. Among the Ghost’s guests are Beck, Charlton Heston, Peter Fonda, Mark Hamill and Jon Stewart.

Saturday

C. Thomas Howell and Matt Frewer star in the Sci-Fi Channel thriller “Dead Fire,” at 6 p.m.

Barry Bostwick stars in the Movie Channel’s “I Worship His Shadow,” at 9 p.m., the first of four sci-fi films following a trio of misfits who have stolen the most destructive weapon on the planet.

Sunday

Tom Berenger is Teddy Roosevelt in John Milius’ four-hour historical drama “Rough Riders,” at 5, 7 and 9 p.m. on TNT. The conclusion will be shown Monday at the same times.

Billy Crystal is the latest guest on Bravo’s “Inside the Actors Studio,” at 6 p.m.

Directors Tony and Ridley Scott are executive producers of Showtime’s new erotic anthology series “The Hunger,” premiering at 9 p.m. The show is based on short stories of the forbidden and bizarre; Terence Stamp hosts.

Fox’s “Goosebumps” goes prime time with “Night of the Living Dummy III,” 7 p.m. on Channel 11.