Presenting Adele...before she was exhausted...

Our March Membership Drive Starts this weekend...highlights include Trans-Siberian Orchestra on Friday, Big Band crooners and music on Saturday, and a documentary on the making of Downton Abbey on Sunday. And don't miss performances by the super hot Adele, recorded just days after the release of her record-breaking sophomore album, 21, for a small group of lucky fans... on Sunday...check local listings for times.

Will the real Mary Katherine Gallagher, awkwardly stand up...

Actress & comedian Molly Shannon is best known for her six-year run as a Saturday Night Live cast member, creating many recurring characters...like the uncoordinated Mary Katherine pursuing her entertainment career. But she's also enjoyed success in films, on Broadway and in many other roles for television. Shannon's latest project is a children's book called Tilly the Trickster. She joins Evan to talk about SNL, becoming an author, and the tricky business of women in comedy...OVERHEARD at 8pm

He was almost convinced that he was standing on another planet...

NOVA teams up with National Geographic to do what they do so well...create a unique photo archive of melting glaciers in remote locations in the Arctic, Alaska and the Alps. Photojournalist James Balog and his team haul time-lapse cameras into the frozen wild to capture stunning images, all the while fighting sub-zero temperatures and 170 mph winds, in a landscape few have seen before...NOVA: Extreme Ice...8pm

Steve Jobs: One Last Thing is being re-broadcast tonight...a story well worth seeing, despite knowing how it ends...to me, it's the beginning that is most fascinating. 9pm

For two centuries, American whale oil lit the world...

From director Ric Burns (New York: A Documentary Film, Ansel Adams, The Donner Party) "Into the Deep: Whaling & America" explores the rise and fall of America's first global industry...8pm

FRONTLINE looks at the practice of vaccinating our kids...some 26 inoculations for 14 different diseases by age 6. Generation Rescue argues that vaccines are no longer a public health miracle but a scourge; responsible for alarming rises in certain disorders, including ADHD and autism. This is the vaccine war: pitting the public health establishment against a populist coalition of parents, celebrities, politicians and activists...and it's being fought on the Internet with the latest social media tools, includingFacebook and Twitter, to win the hearts and minds of the public...FRONTLINE at 9pm

Revenge of the nerds...

After the disappointing cancellation of tonight's Republican Presidential debate on PBS,
the network will alleviate the pain with massive doses of Antiques Roadshow at 7pm

To some he was a saint spreading information to the masses, to others he was a power mad Mephistopheles with a plan to take over the world...but no one can deny his genius.
Following the October 2011 death of probably the most inspirational computer designer and innovator of the 21st century, this film takes an in-depth look at the life, and work of Apple boss Steve Jobs...to examine how and why he revolutionized our world.
STEVE JOBS - ONE LAST THING...9pm

He explains to Howard why he was so "pretty"...

This film chronicles Cassius Clay's arrival in Miami in the fall of 1960 (fresh from earning a gold medal in the Rome Olympics), his life in Overtown -- a neighborhood that was considered "Harlem South" and a vibrant center of black entertainment and commerce -- and his affiliation with the famed Fifth Street Gym in Miami Beach. Clay evolved both professionally and politically, piling up victories in the ring and adopting the black separatist teachings of the Nation of Islam. As "MUHAMMAD ALI: MADE IN MIAMI" makes clear, it was in this period that Cassius Clay became Muhammad Ali...7pm

Music really can change the world...

Film maker Leslie Woodhead first met the Beatles in 1962 when he worked on a film in the Liverpool Cavern Club...before the world had heard of the Fab Four. Twenty-five years later he became aware of how the Beatles legend had soaked into the lives of a generation of Soviet kids -- even though they were barred from playing "Back in the USSR." Now he has been on a journey to meet the Soviet Beatles generation and to discover how the Fab Four changed their lives. Featuring a bizarre collection of Beatles tribute bands, the film tracks down the stories of how the Cold War was won with music as much as with nuclear missiles...9pm