All times Eastern.

• 6PM, National Geographic - Critical Situation: Hell on High Water. A violent storm hits the 54th Sydney to Hobart Yacht Race, leaving six sailors dead and many others injured. (60 min)
• 6PM, G4 - Ninja Warrior: Sasuke 7: Part 2 (30 min)
• 6PM, Science Channel - Fireballs From Space: Comets, asteroids or meteors hitting Earth may have catastrophic consequences. (60 min)
• 6PM, Versus - Fearless: Profile of the famous and not-so famous faces of the outdoors and sports. (60 min)
• 6:30PM, G4 - Ninja Warrior: Sasuke 7: Part 3 (30 min)
• 7PM, USA - Tennis (sports): U.S. Open, First Round (240 min)
• 7PM, History Channel - Modern Marvels: Dynamite. Dynamite blasts out the natural resources that have built our modern world. (60 min)
• 7PM, Discovery HD - Urban Wild: Tokyo. Unique habitats in Tokyo. (60 min)
• 7PM, Speed - Chop Cut Rebuild: Shop… Cut Rebuild! Looking for Impala parts; separating the Bricklin’s body and chassis. (30 min)
• 8PM, NBC - Live From New York: The First 5 Years of Saturday Night Live: Interviews with executive producer Lorne Michaels, crew members, musicians, present and former cast members, and past hosts show the programs beginnings and what happens behind the scenes. (120 min)
• 8PM, ESPN - 2007 World Series of Poker (sports?): Main event, from Las Vegas. (60 min)
• 8PM, G4 - X-Play: “Luminous Arc”; “Hot Brain”; “Resident Evil 4.” (30 min)
• 8PM, Food Network - Good Eats: Shell Game IV: Scallops. Scallops (30 min)

9PM and on after the jump!

• 9PM, PBS (NY 13) - Wide Angle: The Dying Fields. Crop failures, sinking global cotton prices and spiraling debts drive farmers to suicide at the rate of one every eight hours in the Vidarbha region of India. (60 min)
• 9PM, History Channel - The Universe: Search for ET. The Search for Extraterrestrial Intelligence. (60 min)
• 9PM, Discovery Channel - Dirty Jobs: Wild Goose Chase. Mike travels to the Alaskan tundra and works with a team to round up wild geese. (60 min)
• 9PM, Sundance - It’s Not Easy Being Green: The Strawbridges confront the realities of raising pigs for food. (35 min)
• 9PM, HBO - Snakes on a Plane (movie): An FBI agent must contend with a swarm of deadly serpents that have been released aboard an airliner to kill the witness he is escorting to trial. (120 min)
• 10PM, Discovery Channel - Build It Bigger: Hurricane-Proof Homes. The construction of modular homes from start to finish. (60 min)
• 10PM, Comedy Central - The Comedy Central Roast: Flavor Flav. The Comedy Central Roast of rap artist Flavor Flav. (90 min)
• 10PM, National Geographic - Critical Situation: Killing Pablo. Efforts to assassinate drug dealer Pablo Escobar claim hundreds of lives. (60 min)
• 10:30PM, Sundance - Gimme Green: The American obsession with the residential lawn. (30 min)
• 11PM, Discovery Channel - Dirty Jobs: Geoduck Farmer. Harvesting clams in Puget Sound; restoring a church’s antique pipe organ. (60 min)
• 11PM, Cartoon Network - Futurama: Amazon Women in the Mood. The ship crashes on a planet inhabited by a race of man-hating, giant women. (30 min)
• 11PM, Military Channel - Seven Wonders Of …: Military Technology. Technology enhances modern warfare. (60 min)