Actor Christopher Knight (“The Brady Bunch”) is 52.

Opera singer Joan Sutherland is 83.

Actor Barry Newman is 71.

Singer Johnny Rivers is 67.

Singer-songwriter Joni Mitchell is 66.

Singer Nick Gilder is 58.

Guitarist Greg Tribbett of Mudvayne is 41.

Actor Jeremy London (“Party of Five”) is 37.

Actor Jason London (“The Rage: Carrie Two”) is 37.

Actress Yunjin Kim (“Lost”) is 36.

Guitarist Zach Myers of Shinedown is 26.