All times Eastern.

• 6PM, Discovery Channel – How It’s Made: Electrical panels; kites; eyeglass frames; toothbrushes.
• 6PM, Science Channel – Survivorman: Canyonlands. Les Stroud spends a week in the canyonlands of Utah. His only supplies are scavenged bike parts, a multi-tool, a magnesium flint stick and an old energy bar.
• 6PM, Discovery Health – Code Blue: One Day at a Time. Segments include a man injured in a construction accident; a mother and son in an automobile accident; and a woman in respiratory distress. Also: a minister tends to spiritual recoveries.
• 6PM, Fuse – The Sauce: A magazine program that features music news, lifestyle information and celebrity guests.
• 6:30PM, Discovery Channel – How It’s Made: Cars; grocery carts; collectible coins.
• 6:30PM, HGTV – Rezoned: An 1894 school building; a former Baptist church; an old YMCA structure; an unused missile silo.
• 6:30PM, G4 – Ninja Warrior: Human physical ability is tested in each episode, as 100 competitors push their limits through a physically demanding four-stage course.

7PM and on after the jump!

• 7PM, Discovery Channel – How It’s Made: Carbon-fiber masts; fortune cookies; IMAX projectors; roller chains.
• 7PM, Food Network – Good Eats: Spice Capades. Alton Brown cooks with spices. Included: selection and storage; grinding tools. Also: spice origins.
• 7PM, Speed – Chop Cut Rebuild: Big Flip. A core support for the Chevy; teardrop tail lights for the hot rod.
• 7PM, History Channel – Modern Marvels: Oil. The oil industry, from the digging of the first well in the 1850s to its geopolitical implications in the late 20th century.
• 8PM, PBS – Wild Chronicles: An expedition to count Antartica’s penguins one bird at a time is spotlighted. Also: keeping visitors to Yosemite National Park safe from black bears; an American woman’s attempt to climb Pakistan’s K2 mountain.
• 8PM, Discovery Channel – Hazard Pay: Rodeo Clown. Curt gets down as a rodeo clown, entertaining the crowd and keeping angry bulls away from riders. Later, he tries bullfighting.
• 8PM, Discovery Health – You: On a Diet: Hosts Mehmet Oz and Michael Roizen offer viewers tips on the science of nutrition, and explain how food is absorbed and used in the body.
• 8PM, National Geographic – Super Snake: Tracking large snakes, some more than 30 feet long, with 100 teeth, 500 vertebrae, 1000 ribs and 10,000 muscles. The hour follows these “super snakes” as they stalk prey, constrict it and consume it. Also: fact and fiction about snakes.
• 9PM, TLC – Brookhaven Clinic: Cheats, Lies, and Videotapes. Footage from hidden cameras shows clinic residents cheating and breaking the program rules. Included: smuggling in junk food.
• 9PM, Discovery Times – Most Evil: Partners in Crime. Notorious killers who worked in pairs include Ian Brady and Myra Hindley, England’s “Moor Murderers,” who murdered five children and buried them in the moors, and Charles Lake and Leonard Ng, who tried to create a colony of sex slaves.
• 9PM, Discovery HD – Accident Investigator: Left Turn Tragedy. A young mother and her child are the victims of a staged crash; the battered body of an elderly woman is found in a shallow grave.
• 9PM, Science Channel – Mars Underground: Aerospace visionary Robert Zubrin is profiled, and his theory of the establishment of permanent human settlements on Mars is examined.
• 10PM, ABC – Lost: The Man Behind the Curtain. Ben begrudgingly begins to let Locke in on the island’s secrets. The first one involves the mysterious Jacob. Meanwhile, Juliet’s secret is out. Flashbacks follow Ben.
• 10PM, Speed – Unique Whips: Centerfolds and SEMA. Will prepares for the SEMA show; Playboy Racing driver Tommy Constantine brings a show car to the shop.
• 10PM, History Channel – Modern Marvels: Welding. A history of welding includes techniques used to create body armor; robotic welding; and explosion welding.
• 10PM, PBS – Nature: Raptor Force. Raptors such as the peregrine falcon, golden eagle and red-tailed hawk are spotlighted. Included: a miniature camera captures the world as birds see it; and chronicles a golden eagle’s pursuit of a jackrabbit.
• 11PM, Comedy Central – Daily Show: unknown
• 11PM, HGTV – Junk Brothers: A wooden bucket becomes a glass-top table; a shutter door is turned into a canopy bed.
• 11:30PM, Comedy Central – Colbert Report: unknown