4 of 21:
Betty White hosts the hidden camera show 'Off Their Rockers,' which sees senior citizens pulling pranks on the younger generation. It began its second season in 2012.
According to TVGrapevile, when asked during a conference call in January to promote the show, just before her 91st birthday, why she keeps working, White said: 'Because why quit something you're enjoying so much? I know I do, and it's such fun, and who at the -- who would ever expect at 91 to still get invited to do shows. I mean, that's unheard of, so if they don't want me to do it, don't ask me, because if they ask me I'll take it.'
(Pictured: Betty White appears in a publicity photo for 'Off Their Rockers.')
( Photo / Kinetic Content)