As the subtitle implies, “American Masters – Marilyn Monroe: Still Life” (9 p.m., PBS) doesn’t so much profile Monroe but offer a parade of the photographers who created her image. Like most films about Monroe, the cumulative effect of “Still Life” is slightly sad and more than a little creepy.

We hear from a multitude of artists who declare Monroe a natural before the camera, who simply came to life or who rather assumed a role before their eyes and lens. The cliche “the camera was in love with her” can be heard more than once. And that goes double for those wielding the cameras.

One photographer implies that Marilyn tried to seduce him, but declines to say whether he accepted. But he assures us that he could have, and that’s just as good. Norman Mailer reads from his work on Monroe, and offers an anecdote about seeing her at the Actor’s Studio. She’d been suffering a cold and looked terrible. Too terrible for Mailer, it seems. He didn’t want to ruin his fantasy. Of course, this says much more about Mailer than Monroe.

For a work that is supposed to champion an “American Master,” this film is pointedly free of clips of Monroe’s films and all but bereft of commentary about her work. So was she an “American Master” or an American Enigma? Or an American Victim?

¢ If there is anything duller than exercising, it’s having to watch other people exercise. And if there’s anything duller than that, it’s listening to other people talk about exercising.

This brings us to “Work Out” (10 p.m., Bravo). Set in a swank Beverly Hills gym called Sky Sport, the show profiles a group of personal trainers and their clientele of celebrities and would-be celebrities.

Owner Jackie Warner introduces herself as just another girl from the Midwest who arrived in Los Angeles with gumption and a dream. She envisioned opening a gym in a penthouse in Beverly Hills and, by golly, she did. Folks pay up to $400 an hour to be inspired by her, particularly celebrities on the other side of 40 who want to maintain “their 20-year-old body.”

Unfortunately for us, Jackie appears to have surrounded herself with people who have yet to outgrow their 13-year-old minds. Like vain, insecure seventh-graders, they speak endlessly of themselves, their bodies and their attractiveness to others.

Tonight’s other highlights

¢ If your town seems bereft of talent this summer, it’s because everybody has left to appear on “Rock Star: Supernova” (7 p.m., CBS), “The One: Making a Music Star” (7 p.m., ABC), “So You Think You Can Dance” (7 p.m., Fox) and “America’s Got Talent” (7:30 p.m., NBC).

¢ A grave robbed on “Bones” (7 p.m., Fox).

¢ A married couple squirms while awaiting the hot seat on “Criminal Minds” (8 p.m., CBS).

¢ A writer (William H. Macy) retreats between the covers in “Umney’s Last Case” on “Nightmares & Dreamscapes” (8 p.m., TNT). A second Stephen King tale, “The End of the Whole Mess” (9 p.m.), stars Ron Livingston and Henry Thomas.

¢ A grisly discovery beneath a gridiron on “CSI: NY” (9 p.m., CBS).