All times eastern

• 6PM, Discovery Channel - How It’s Made: Windshields; English saddles; butter; post clocks.
• 6PM, Military Channel - Moments in Time: Napoleon’s Lost Army. Scientists find a mass grave of Napoleon’s soldiers in Russia.
• 6PM, Discovery Health - Code Blue: Car-train collision; drunken young man stabbed; parents panic when school bus crashes.
• 6PM, Science Channel - Amazing Earth: Catastrophic events alter the planet’s appearance; Patrick Stewart narrates.
• 6PM, Discovery Times - The New Detectives: Elements of Murder. Everyday substances reveal hidden clues that break a homicide case.
• 6:30PM, Discovery Channel - How It’s Made: Nails and staples; safety glasses; fabrics; bicycles.
• 7PM, Food Network - Good Eats: Tuna: the Other Red Meat. Grilling tuna on a chimney charcoal starter; avoiding fake soy sauce; tuna steaks.
• 7PM, TLC - Overhaulin’: Spaced Out. The team fixes up a ‘67 Galaxie for a man who put his life on hold to take care of his ailing mother and grandparents.
• 7PM, Discovery Health - Impact: Stories of Survival: Stock Car Smash. Speedboat crash victims; Olympic luge accident; water-scalding injury; stock car wreck.
• 7PM, Discovery HD - Cheetah: Race Against Time: Wildlife expert Peter Gros and Dr. Laurie Marker of the Cheetah Conservation Fund explore the best way to increase the cheetah population.

8PM and on after the jump!

• 8PM, ESPN - 2007 Scripps National Spelling Bee: Final Rounds. From Washington, D.C.
• 8PM, Science Channel - Creature Tech: Scientists attempt to draw lessons from nature.
• 8PM, Versus - World Combat League: WCL Third-Place Match. Coverage of the third-place match of the Championship Series, from Austin, Texas.
• 8PM, Fuse - Tattoo Stories: More and more people are using their bodies as a canvas for storytelling.
• 8:30PM, ABC - NBA Countdown: NBA pregame show.
• 8:30PM, G4 - X-Play: “Avatar: The Last Airbender”; “Capcom Puzzle World”; “Heavy Weapon”; “Supreme Commander.”
• 9PM, Food Network - The Next Food Network Star: Potluck, Cakes and Wedding Challenge: Part 1. The eleven finalists meet for the first time, present an original dish to the selection committee, decorate a cake and cater a wedding.
• 9PM, Science Channel - Robo Sapien: the secret (r)evolution: Scientists seek to interface the human brain directly with machines.
• 9PM, Speed - Payback: Robert Downey, Jr. Robert Downey, Jr. surprises his friend with a customized H3.
• 9PM, Discovery HD - Rogue Nature: Bears. Fatal bear-attacks.
• 9:30PM, Speed - American Muscle Car: The Last Sting Ray: America’s Favorite Car. America’s most famous racers work tirelessly to raise the Corvette’s performance level.
• 10PM, History Channel - Modern Marvels: Metal. Metal structures shape human progress.
• 10PM, Travel Channel - 1,000 Places to See Before You Die: India. The Ulles embark on a journey through India.
• 10PM, G4 - G4’s Free Stuff: Reviewing gadgets, games, music, movies and books while viewers are rewarded on the air.
• 10PM, Science Channel - Baseball’s Secret Formula: Baseball teams use sabermetrics to build their franchises.
• 11PM, History Channel - Modern Marvels: Gangster Guns. Colt .45s and .38s; Tommy guns; Whippets; Browning automatic rifles.
• 11PM, Comedy Central - Daily Show: Eddie Izzard, actor/comedian
• 11PM, Showtime - Boxing: Ossie Duran vs. James Kirkland, Junior Middleweights. From Santa Ynez, Calif. Duran (23-5-1, 9 KOs) takes on Kirkland (18-0, 16 KOs) in the 10-round main event. Also: Timothy Bradley (19-0, 11 KOs) vs. Donald Camarena (18-3, 9 KOs), junior welterweights, eight rounds.
• 11PM, Speed - Unique Whips: Indy-Scribable. Tricking out Tony’s hearse; major league pitcher Livan Hernandez.
• 11:30PM, Comedy Central - Colbert Report: Cullen Murphy, author of Are We Rome?: The Fall Of An Empire And The Fate Of America