Rock and Roll or Rossini...or both!

Lots of music on the tube this weekend...rocker Chris Robinson and his Black Crowes come back to life on Live From The Artists Den, Saturday at 9, followed by Elvis Costello on Austin City Limits...also appearing on ACL is Austin and Amarillo favorites Band of Heathens...10pm

On Sunday you can recover from whatever you were doing during ACL with Rossini's vocally dazzling comedy "Le Comte Ory" on Great Performances at the Met at 2pm.
High culture smooths out the weekend with classic opera, fabulous costuming and sets, and "the most beautiful love music Rossini ever wrote."

Turn around quick...they always hunt in pairs...

Top predators with intelligence, who learn as they hunt, and who use their brain to track down prey, no matter what...they look like dragons...sharp teeth, tearing claws and a whip-like tail. They are the largest lizards still walking the planet, the monitor lizards -- the Lizard Kings...NOVA 7pm

And to continue the dino theme, a unique field expedition, covered exclusively by NOVA, will set out for Alaska's North Slope to defrost a jackpot of new fossil clues about dinosaurs. With the help of stunning CGI, NOVA will breathe life into the polar dinosaurs' lives and environment in vivid detail. With Alaska's spectacular wilderness as a backdrop, this program will reveal a prehistoric lost world for the first time on television...8pm

The times...they really are "a-changin'"...

The bulk of the marijuana consumed in the United States used to come across the border from Mexico, Canada and elsewhere. Now, more than half of it is believed to be home grown in California, where an enormous black market has emerged under the cover of the state’s medical marijuana law. FRONTLINE and The Center for Investigative Reporting team up to investigate the country’s oldest, largest and most wide-open marijuana market...Tonight at 9pm.

Watch the full episode. See more FRONTLINE.

We're all about second chances...

ANTIQUES ROADSHOW...you know what they do, and they do it twice...
ABRAHAM AND MARY LINCOLN...you know what they did, and if not, this ongoing American Experience series will bring you up to speed in excruciating detail...

But if you somehow missed last night's Masterpiece Mystery!, you get a second chance late tonight...perfect for setting the DVR and enjoying at your leisure. It's the second installment of the new series "ZEN". In the shark tank of Roman politics, he’s known as an honest detective...much to the detriment of his career. Aurelio Zen always tries to do the right thing while making it appear that he’s following the conflicting orders of his bosses. And to complicate things even more, he's newly divorced and living with his mother...while becoming involved with his bosses aide.
And then there's Rome, up close and gorgeous...don't miss it...tonight at 1am

The bookmobile that eats hay...

POV's "Biblioburro" is the story of a librarian -- and a library -- like no other. A decade ago, Colombian teacher Luis Soriano was inspired to spend his weekends bringing a modest collection of precious books, via two hard-working donkeys, to the children of a poor and violence-ridden province. As Soriano braves armed bands, drug traffickers, snakes and heat, his library on hooves carries an inspirational message about education and a better future for Colombia...Saturday at 11pm

Steve Earl pays tribute to his songwriting mentor Townes Van Zandt on Austin City Limits...Saturday at 10pm

The second installment of the new Masterpiece Mystery! series "Zen" continues on Sunday night...with the frazzled police detective in Rome dodging office politics, criminals, and a personal life that is quite, uh shall we say, complicated...8pm

Watch the full episode. See more Masterpiece.

Careful what you say around Evan...it might end up on the air.

Formerly Texas Monthly Talks, Evan Smith's new gig covers some of the same ground...smart conversations with the country's most interesting people...you’ll meet politicians, authors, artists, actors, journalists, businesspeople, & anyone who’s at the center of things. Tonight it's Robert F. Kennedy, Jr. discussing his skill as a lawyer to work as a high-powered and high-profile environmentalist.
Overheard with Evan Smith...8pm

This is what happens when you look for the "City of Gold"...

What was the fate of famed adventurer Col. Percy Fawcett, who went looking for a city of gold -- the Lost City of "Z" -- in the Amazon in 1925 and disappeared in the jungles of Brazil forever? NOVA goes trekking along the paths that Fawcett followed...the search for clues ends at a Xinguano-Kuikuro village in the heart of the Mato Grosso: where a new archaeological discovery may reveal the true location of the Lost City of Z...NOVA 7pm

Perhaps...you can't handle the truth...

The latest was Osama bin Laden, one of thousands of Taliban and Al Qaeda fighters who fell to the military's secret "Kill/Capture" program. A six-month investigation by FRONTLINE has gone inside to discover new evidence of the program's impact -- and its costs. Under the command of Gen. David Petraeus, U.S. forces are carrying out an unprecedented number of targeted raids using highly classified intelligence, aerial drones and Special Operations Forces. But is the tactic working? Traveling into the lawless border regions of Afghanistan and Pakistan, FRONTLINE tells the story from the perspective of Afghan civilians, U.S. troops and the Taliban militants they are pursuing...9pm

Four score and seven years ago...

At 7pm we go to Chattanooga, Tennessee, the backdrop for ANTIQUES ROADSHOW's look at an heirloom Confederate soldier's sword...an interesting lead in to the continuing American Experience series Abraham and Mary Lincoln: A House Divided. In tonight's episode we examine a major point in the timeline of history...as Mary Lincoln struggles with her grief, Abraham becomes consumed with the nation's Civil War tragedy and issues a defining statement of not only his presidency, but those that follow: the Emancipation Proclamation...9pm

With the stroke of a pen the world was changed...for a while.

Go behind the scenes with filmmakers Ken Burns and Lynn Novick in this sneak preview of their new film PROHIBITION, premiering in fall 2011. Discover the true story of America's "Great Experiment" and go beyond the oft-told tales of gangsters, rum runners, flappers and speakeasies to experience the rise, rule and fall of the 18th Amendment ending adult beverages...Sunday night at 10pm

But on Saturday, look in on British singer-songwriter David Gray, who was boosted by the success of the international hit single, "Babylon." But of course, that was 10 years ago. Have a listen to what he's doing now...Live From The Artists Den, Saturday 9pm

POV examines the "killing fields" of Cambodia, enacted by the takeover of the Khmer Rouge, remaining largely unexplained. Until now. Thet Sambath, an investigative journalist who lost his family in the conflict spends a decade gaining the trust of the men and women who perpetrated the massacres and tells the story...POV "Enemies of the People"...Saturday night at 11pm

Spinal Tap's bass player turns it up to 12...

in the Simpsons you know him as the voice of Mr. Burns, Ned Flanders, Waylon Smithers and many other characters. He's an Emmy and Grammy award-nominated actor and writer whose film credits include Spinal Tap and A Mighty Wind...he also works as a novelist, a radio host, founder of a record label and now a first-time documentary filmmaker...meet the real Harry Shearer as he sits to talk with Evan Smith tonight on OVERHEARD...8pm

Imagine standing on the bottom of the ocean...

and looking up into a glittering kelp forest alive with darting fish, or watching five-foot-long sharks and giant tuna whiz by at arm’s length, or being surrounded by elegant, lacy white jellyfish as they soar, pulsing, through the water. Visitors to the Monterey Bay Aquarium on the coast of Northern California experience all this… and more. Tonight on Nature, go behind the scenes in a study of jellyfish, and the release of a great white shark back into it's natural habitat...and if at all possible, watch on an HD monitor. Amazing! 7pm

Why would four innocent men confess to a brutal crime they didn't commit?

FRONTLINE investigates the conviction of four sailors in the 1997 rape and murder of a Norfolk, Virginia, woman. The sailors confessed despite the absense of any evidence linking them to the crime.

The case raises disturbing questions about the actions of the police and prosecutors, who relied on the sailors' often contradictory confessions for their convictions, and disregarded DNA evidence that pointed to a lone assailant who would later confess to the crime himself while serving prison time for another rape...FRONTLINE 9pm

If you like really big guns and diamonds...

Reenactors fire a mid-19th-century cannon at the Chickamauga and Chattanooga National Military Park in the first of 2 Antiques Roadshows...also inspect an heirloom necklace whose centerpiece is a five carat diamond, valued at $250,000...and then go to San Antonio to visit the Witte Museum's collection of horn furniture, a Bavarian craft popularized in 19th-century America by Texas maker Wenzel Friederich, whose patrons included Queen Victoria and Kaiser Wilhelm I. At the Henry B. Gonzalez Convention Center, appraisers corral treasures from all over the map, including a massive desk and bookcase, made in the mid-19th-century German-Texan tradition, valued at $7,000 to $10,000. Antiques Roadshow...7 & 8pm