Suzanne Somers 'Three's Company' actress dead at 76 Donna from the seventies program was a beloved character during the era. She charmed the hearts of countless followers with her distinct nature. Diane was portrayed as a lady null of energy as well as sass. The woman's character depicted that fashionable and hip subculture of the time period. Don's impact on this seventies show will forever remain etched to be a crucial component in its popularity.