In 1975, a strange half-hour pilot for a variety show aired on ABC. It was titled "The Muppet Show: Sex and Violence", and yes... it featured the lovable Muppets. Although, the demographic was a decidedly older one than we're used to. According to Muppet Wiki, this one-off pilot was a "parody of the proliferation of sex and violence on television". It's an odd show, yet... familiar. And, although it's only an early shadow of what the actual Muppet Show would become... it's strangely entertaining.
I enjoyed it. You might as well.
That said, I've included the entire "Sex and Violence" pilot below, in three installments. Sit back, click play.... and enjoy the pre-Muppet Show, version 1.