The Week’s guide to what’s worth watching

Quality Balls: The David Steinberg Story

An early pioneer of narrative-style stand-up, Canadian native David Steinberg was once controversial enough to get The Smothers Brothers Comedy Hour canceled and popular enough to make 140 Tonight Show appearances. Big-name peers share their appreciation in this career overview, which will air before Steinberg interviews Zach Galifianakis and Jimmy Fallon in the third-season premiere of his chat show Inside Comedy. Monday, Feb. 3, at 9:30 p.m., Showtime

The Amish: Shunned

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Cutting social ties is always hard, and yet the Amish make it harder. This wrenching documentary profiles seven individuals who walked away from the tradition-bound culture despite knowing that family and other loved ones would be compelled to erase them from their lives, ending all communication. Both sides open up about the painful experience, including their worries that self-exile also eliminates any chance of reaching heaven. Tuesday, Feb. 4, at 9 p.m., PBS; check local listings

The Tonight Show With Jay Leno

This time, it’s probably for keeps. Four years after he pushed aside Conan O’Brien to reclaim the host’s chair on NBC’s late-night flagship, Jay Leno is ready to make way for Jimmy Fallon’s Feb. 17 ascension. Billy Crystal, who was the show’s first guest after Leno took over in 1992, will also be Leno’s last. Thursday, Feb. 6, at 11:35 p.m., NBC

The Walking Dead

So far in season four, the human survivors of the zombiepocalypse have been busier battling one another than the flesh eaters who’ve put them in such dire straits. That should change, as December’s midseason finale ended with the losing faction destroying their rivals’ prison sanctuary. Allies have been scattered now, as ex-lawman Rick Grimes and his young son press on.Sunday, Feb. 9, at 9 p.m., AMC

Looking

A new series about three gay friends seeking love and fulfillment in San Francisco might sound like a cynical bid to repeat the breakout success of Girls. Looking has potential to become a mirror on gay life in 2014, but its dramas range widely enough to break out to a much broader viewership. Frankie Alvarez, Jonathan Groff, and Murray Bartlett star. Sunday, Feb. 9, at 10:30 p.m., HBO

Other highlights

Hitler’s Secret Attack on America

Follow scientists as they comb the floor of the Atlantic Ocean for evidence of a failed 1941 German U-boat attack. Wednesday, Feb. 5, at 9 p.m., National Geographic

Super Skyscrapers

The tallest building in the Western Hemisphere rises from the ashes of New York City’s twin towers in the first episode of a four-part documentary series about 21st-century building innovations. Wednesday, Feb. 5, at 10 p.m., PBS; check local listings

The Night That Changed America

Fifty years after the Beatles played The Ed Sullivan Show, the culture-rocking event will be revisited in a special featuring new performances by Alicia Keys, John Legend, and Annie Lennox. Sunday, Feb. 9, at 8 p.m., CBS