One-hit wonders, Japanese pop stars, and the Brady Bunch headlined some of the most cringeworthy variety shows back in the '70s.

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Hello boys

As the pop icon turns 75, we look back on the bell-bottoms, leotards and Bob Mackie-designed dazzlers

These looks are far out.

In the late 70's, Disco was all the rage. In 1977, Studio 54 opened in New York, Donna Summer's music hit the charts, and the film Saturday...