Top TV picks for Aug. 4: 'Killing the Colorado,' 'Greatest Hits,' 'Men of Honor'

Oscar winner Barbara Kopple ("American Dream") is among the producers behind "Killing the Colorado," a new documentary that examines the manmade water shortage that threatens the future of the American West. The film was made in partnership with ProPublica, the latest example of mainstream journalism and filmmakers working together to shed light on important subjects.

8 p.m. Discovery Channel

The summer mix tape "Greatest Hits" concludes with Ariana Grande belting out a tribute to Whitney Houston and Celine Dion reminding us that "My Heart Will Go On." No word yet on whether the network will feel the same kind of dedication toward the Arsenio Hall-hosted series beyond this year.

8 p.m. KSTP, Ch. 5

Cuba Gooding Jr. may have received an Emmy nomination for his role in "The People v. O.J. Simpson: American Crime Story," but to me, he's still the hotshot insisting that everyone show him the money in "Jerry Maguire." The closest he came to broadening his reputation beyond that Oscar-winning role was 2000's "Men of Honor," which also features a terrific performance by Robert De Niro, another actor who hasn't done enough memorable work in the past 20 years.

9:45 p.m. Starz

Neal Justin