All times Eastern.

• 6PM, Discovery Channel - How It’s Made: Included: bicycle helmets; lithium batteries; car brakes; aluminum.
• 6PM, History Channel - Man, Moment, Machine: JFK and the Crisis Crusader. Recalling the 1962 Cuban Missile Crisis, during which President John F. Kennedy ordered a blockade of Cuba to prevent the USSR from delivering nuclear missiles to the island.
• 6PM, Discovery Health - Critical Incident: Sudden Impact. Cases at Maryland’s Shock Trauma Center in Baltimore include a 14-year-old boy who has a severe chest wound and a pilot and copilot whose aircraft crashed.
• 6PM, Fuse - The Sauce: A magazine program that features music news, lifestyle information and celebrity guests.
• 6:30PM, Discovery Channel - How It’s Made: Included: engine blocks; jawbreakers; drum shells; drums.
• 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, Food Network - Good Eats: Raising the Bar. Classic cocktails are mixed.
• 7PM, Discovery Channel - MegaBuilders: Moving Mountains. A massive tunneling machine gets stuck while boring the Gotthard Base Tunnel through the Swiss Alps, a link in Europe’s high-speed rail network, necessitating a rescue tunnel.
• 7PM, PBS - BBC World News: International news from the British Broadcasting Corporation.
• 7:30PM, Weather Channel - Storm Stories: Ghost Lake. A disastrous family boating trip is chronicled.
• 8PM, Fuse - Tattoo Stories: An exploration of the tattoo culture features people relating the tales behind their skin art.
• 8PM, Discovery Channel - Oil, Sweat and Rigs: Tetra. An elite team of divers make a risky descent to seal a badly damaged oil well 100 feet below the surface of the Gulf of Mexico.
• 8PM, LWOR - International Fight League’s Total Impact: A countdown of the IFL’s greatest knockouts of all time. Also: the first-ever ring-girl search.
• 8PM, Discovery HD - Risk Takers: Paramedics. The high-pressure world of paramedics is examined.
• 9PM, Travel Channel - Bizarre Foods with Andrew Zimmern: Gulf Coast. Host and Chef Andrew Zimmern goes on a hunt for a large rodent called a Nutria in Louisiana and samples the fixings at an alligator cookout in Mobile, Alabama; Andrew visits the world famous Café Du Monde in New Orleans, Louisiana.
• 9PM, Discovery Health - Medical Incredible: Spray on Skin. Examining necrotizing fasciitis, also known as flesh-eating bacteria.
• 9PM, NBC - Heroes: Landslide. Nathan weighs his mother’s advice against plans by Linderman; Hiro gets some family information as he prepares to face Sylar; Peter and Ted try to leave New York to avoid the explosion. George Takei and Eric Roberts guest star.
• 10PM, Discovery Channel - Stunt Junkies: Go Big or Go Home: Jet Ski Double Backflip. Ross Champion attempts a double backflip on a jet ski.
• 10PM, Discovery Health - Mystery Diagnosis: A teenage girl is rushed to the hospital after taking aspirin for altitude sickness; a woman experiences sharp, needlelike pain in her left arm, and the pain mysteriously spreads.
• 10PM, FX - The Riches: This Is Your Brain on Drugs. Convinced that Dahlia still has a drug problem, Wayne stages an unusual intervention: He takes meth himself. A speed-filled romp ensues, so it’s up to Dahlia to keep things together at Panco. Meanwhile, Dale shows up in Edenfalls.
• 11PM, Comedy Central - Daily Show: Jeremy Paxman, author of On Royalty
• 11PM, HGTV - World’s Most Extreme Homes: A two-story straw home; a Mediterranean-style home in Mexico; a minimalist home made from an old balloon factory.
• 11:30PM, Comedy Central - Colbert Report: William Langewiesche, author of The Atomic Bazaar: The Rise Of The Nuclear Poor