"Saturday Night Live" remains one of the most iconic institutions ... looked like behind the curtain in NBC's control room in the '70s. "SNL" is exactly what it's advertised to be: live.

"Saturday Night Live" premiered on October 11 ... Here's a peek at what it looked like behind the curtain in NBC's control room in the '70s. "SNL" is exactly what it's advertised to be: live. That's ...