Christopher Knight on Working with 'Brady Bunch' Costars on New Christmas Movie: We're 'Like Family'

Christopher Knight can’t seem to escape his past as Peter Brady onThe Brady Bunch — and he doesn’t mind one bit. “It didn’t feel like work,” Knight tells PEOPLE of the heartwarming film (premiering December 12), which was shot in Simi Valley, California, not far from Hermosa Beach, where he lives with his wife of five years, Cara Kokenes. “I say yes to projects that we’re all in not just because of the project, but because it’s an opportunity to catch up and have fun again.

Christopher Knight Says Working on His New Documentary About Williams Syndrome 'Melted My Heart' (Exclusive)

Callie Truelove (left) and Christopher Knight (right).Photo:Courtesy of Former Prodigy Media Courtesy of Former Prodigy Media Christopher Knightis bringing smiles to families across the country with a heartwarming new documentary. Knight, 65, best known for his time on the beloved sitcomThe Brady Bunch, has found a new role as a partner withFormer Prodigy Media, which last year launched its first movieTruelove: The Film, a documentary about people with a genetic disorder called Williams Syndrome.

Christopher Knight Was 'Shocked' When Prince Harry and Meghan Markle Sat in His Company's Chairs

“It was a huge deal. We call it Chairgate,” Knight, 64, who famouslyplayed Peter Brady onThe Brady Bunch, tells PEOPLE of the situation with a laugh, explaining that people begangoing crazy for the chairsonline and they sold out immediately. That’s how he found out they had been featured. The chairs in question are a set of white-cushioned wicker club seats — called the Burchett chairs, now$578.99 for two on Amazon— from the online-only furniture company that Knight’s friend from high school began in 2011 and asked him to be a partner in (and eventually give his name to).

Christopher Lawford Once Credited His Sobriety to Cousin David Kennedy's Fatal Drug Overdose

Photo: Greg Doherty/Getty Before he was an advocate for sobriety and recovery,Christopher Lawfordsank into substance and alcohol abuse, starting at age 12. In fact, Lawford, whodied Tuesday at age 63, was not the only member of the famed political family to battle addiction. David Kennedy, the son of Robert F. Kennedy and Ethel Skakel and a cousin to whom Lawford was closest, died of a drug overdose in a Palm Beach, Florida, hotel room in 1984.

Christopher Lawford's Kennedy and Shriver Family Members Mourn His Death: 'He Was a Fighter'

Photo: Cindy Ord/Getty As many mournChristopher Lawford‘s death, members of his famous family are paying tribute to former President John F. Kennedy’s nephew, who died of a heart attack on Tuesday at 63. “God bless you, Christopher. Love you to heaven and back. I miss you already,” cousin Maria Shrivertweetedon Wednesday. “The recovery community lost a founding father today. My cousin, Chris Lawford, passed away from a heart attack yesterday evening.