The biggest disco ball in the world has a diameter of 2.41 meters and weighs 137.89 kgs. It also has 6,900 mirror squares on it.

     Lenny Kravitz's mother played   the part of Helen on the TV        sitcom "The Jeffersons."

The TV show "Saturday Night Live" made its debut on October 11, 1975.

Despite it's success, not a single song from the soundtrack to 'Saturday Night Fever' was nominated for an Academy award.