Highlights 8/28 to 9/3

Fearless researchers and cameramen track skunks day and night to uncover how they hunt, forage, mate and raise amazingly cute baby skunks on NATURE: Is That Skunk? 7 p.m. Sunday.

The saga continues at 165 Eaton Place with new characters upstairs and down in a three-part sequel to the much-loved Masterpiece series from the 1970s on part two and three of “Upstairs/Downstairs” airing back-to-back starting at 8 p.m. Sunday.

Michael Feinstein’s American Songbook: Best Band in the Land examines how popular songs provided emotional solace and patriotic inspiration during World War II 9 p.m. Monday.

What material things mean the most to us? How do otherwise ordinary items come to symbolize experiences, aspirations, and identity? Find out on Objects and Memory 10 p.m. Monday.

On this episode of History Detectives at 7 p.m. Tuesday, Cowan and friends explore a 15th century map for hints about how Europe colonized Florida. Then, the detectives investigate whether families of the Confederate South used children’s dolls to smuggle medicine past the Northern blockade.

Before Al Qaeda launched a devastating attack on America, FBI Special Agent John O’Neill came to believe the United States should kill Osama bin Laden. But O’Neill was muted by the headquarters bureaucracy, so he took a new position as head of security at the World Trade Center, where he was killed on September 11. FRONTLINE: The Man Who Knew at 8 p.m. Tuesday provides a rare glimpse inside the FBI.

POV presents Armadillo at 9 p.m. Tuesday, winner of the Critics’ Week Grand Prix at Cannes, which takes a candid and poignant look at combat operations in Afghanistan.

PBS Previews: Prohibition 10:30 p.m. Tuesday goes behind the scenes with filmmakers Ken Burns and Lynn Novick in this sneak preview of their new film Prohibition, premiering in the Fall.

Science Night features all three episodes of Nova Becoming Human back-to-back. At 7 p.m. Wednesday, First Steps explores fresh clues about our earliest ancestors in Africa, including the stunningly complete fossil nicknamed “Lucy’s Child”. At 8 p.m. Wednesday, Birth of Humanity tackles the mysteries of how our ancestors managed to survive in a savannah teeming with vicious predators. At 9 p.m. Wednesday, Last Human Standing probes a wave of dramatic new evidence, based partly on cutting-edge DNA analysis, that reveals new insights into how we became today’s creative and “behaviorally modern” humans.

Austin City Limits welcomes rock icon Cheap Trick 10 p.m. Wednesday and 9 p.m. Friday. The band performs material from its acclaimed album The Latest and selections from their classic catalog.

Evan Smith chats with Robert F. Kennedy, Jr. about using his skills as a lawyer to work as a high-powered and high-profile environmentalist on Overheard with Evan Smith at 7 p.m. Thursday and 8:30 p.m. Friday.

In Context Presents: Art On Six Strings at 7:30 p.m. Thursday features participants and performers at the 2010 Guitar Foundation of America Convention held in Austin.

Chet travels to Waco, Texas; home of Baylor University, Dr. Pepper, and exceptional mountain biking right in the middle of the city on The Daytripper at 8:30 p.m. Thursday.

Find out why the wildlife depends on summer’s garden on this episode of Central Texas Gardener at noon Saturday. On tour, get photography tips to catch them in action.

Roy Orbison’s appearance on Austin City Limits in 1982 was a big milestone for the show, attracting a much larger audience and much more national buzz. Watch a digitally remastered telecast of Roy Orbison’s performance 7 p.m. Saturday.