Adam and Jamie of the “Mythbusters” (8 p.m., Discovery) take on one of the holy grails of modern conspiracists and crackpots: the notion that the July 20, 1969, moon landing was really staged by NASA in a studio.

¢ Denying the power of science and technology is hardly limited to Apollo skeptics. “Taboo” (9 p.m., National Geographic) looks at faith healers from different cultures and continents and people who entrust their health and very lives to 21st-century witch doctors.

In Venezuela, followers of a goddess known as Maria Lionza put their faith in the “psychic surgery” of a razor-blade wielding shaman. “Taboo” then documents a case of alleged demon possession in Arizona and the exorcist who says he can cure what others think is merely depression. Finally, child adherents of a cult in the Philippines devour lightbulbs containing toxic mercury to prove that they have what it takes to become healers. Illuminating.

¢ Three remaining stylists compete for the top spot on the season finale of “Shear Genius” (9 p.m., Bravo). They’ll have to cut, color and style four different models ranging in age from 16 to 60 under the watchful eye of celebrity stylist Sally Hershberger. The winner gets $100,000 toward their own salon, an apprenticeship with a corporation that provides endless product placements for this show and a chance at a spread in a magazine dedicated to make-up.

¢ “Project Runway” (8 p.m., Bravo) contestants compete with unconventional fabrics. This week’s guest judge, Rachel Zoe, made her name designing outfits for celebrities including Nicole Ritchie. Her association with the underfed “Simple Life” costar earned Zoe a reputation for celebrating “starvation chic” at a time when the fashion industry was trying to move away from ultra-thin models who had a habit of developing anorexia and occasionally dying.

Zoe has tried to put distance between herself and this unhealthy trend. But in a recent Harper’s Bazaar interview that has made its way around the blogs, she has confessed to being so busy that eating is just not a priority.

¢ TCM celebrates the movies of Tony Curtis, including “Some Like it Hot” (7 p.m.), the 1960 Billy Wilder gem frequently cited as one of the finest American comedies of all time. Other Curtis films include the 1965 stewardess comedy “Boeing Boeing” (4 p.m.) and the 1957 potboiler “Sweet Smell of Success” (9:15 p.m.), featuring Curtis’s tour-de-force performance as the groveling publicist Sidney Falco.

Tonight’s other highlights

¢ Democratic National Convention coverage (5 p.m., CNN, 6 p.m., MSNBC, 7 p.m., PBS, 8:45 p.m., Fox News, 9 p.m., ABC, CBS, NBC).

¢ The Yankees host the Red Sox in Major League Baseball (6 p.m., ESPN).

¢ Early-round tennis action at the U.S. Open (6 p.m., USA).

¢ Competition continues on “America’s Got Talent” (7 p.m., NBC).

¢ “Animal Witness” (8 p.m., Animal Planet) looks at the Michael Vick dog-fighting case.

¢ Exhibition football season continues on the documentary series “Hard Knocks: Training Camp with the Dallas Cowboys” (9 p.m., HBO).

Cult choice

With eyes turned toward the nominating conventions, Disney repeats the 1998 made-for-TV comedy “My Date with the President’s Daughter” (6 p.m., Disney).