Buckley has covered many songs by country music singer Mary Chapin Carpenter during her shows. She has professed that the country singer is among her favorite "musical-poet-songwriter-singers." Carpenter once attended one of Buckley's performances and afterwards presented her with a personal letter of thanks. Buckley keeps the note in a frame and has said that receiving it was "one of the highlights of my life."
Buckley sang "Memory" from Cats at the Kennedy Center Honors in December 2006 as part of the tribute to Andrew Lloyd Webber. In 2007, Buckley will appear with Quintessence at Lincoln Center in its Great American Songbook series.
She is perhaps best known for the 1977-81 TV dramedy Eight is Enough. She joined the show in its second season after the original star, Diana Hyland, died after the first four episodes of season 1. Hyland's character (Joan Bradford) died, and Buckley was cast as Sandra Sue Abbott (nicknamed Abby), who went on to become stepmother to the 'eight' (kids) to which the series' title refers.
Buckley also gave a much-remembered performance in the original movie version of Carrie in 1976. She played Miss Collins, Carrie's gym teacher. In 1977, she recorded a solo on the song "Walking in Space," in the movie Hair.
She played the role of a country singer in Bruce Beresford's film Tender Mercies (1982), in which she sang the awarded song "Over You." She also appeared in the Woody Allen's film Another Woman (1988) and in Roman Polanski's Frantic (1988). In 2001-03, she played a role in seasons 4-6 of the HBO series Oz. She also has guest-starred in a number of television series, including Without a Trace, Law & Order: Special Victims Unit, and Monk. She guest-starred in a Christmas Special of the Television Series "Remember Wenn" and sang the memorable Christmas song "You Make It Christmas". In addition, she served as the producer of the PBS series Wishbone.
She also appeared in the horror movie The Happening, which opened nationwide Friday, June 13, 2008.
Buckley has recently been signed to Playbill Records, which released two recordings of the singer; one was made when Buckley was 19 and has been issued on CD and vinyl.
A new album with Quintessence was released on February 14, 2008.
In 2008, Buckley has appeared at Feinstein's at The Regency, and will be at the Kennedy Center during a special series headed by Barbara Cook in October 2008. She will also make her debut at Birdland Jazz Club in September 2008.
Buckley also has been a teacher of song interpretation and communication for over thirty years and teaches at the University of Texas at Arlington. She has trained investment bankers and business professionals from many fields. "No matter what your career, to communicate at your best is absolutely vital, whether it's to one person, a group or an entire audience. But most people get nervous, forgetful and too fearful to express themselves," says Buckley. "I'll help you redefine that fear and use it to your advantage. We'll talk about the dynamics of communication, the essence of common respect, and training your mind to focus on your behalf."
Buckley's official website contains her concert schedule, a detailed biography and summaries of her singing and acting accomplishments.