Surprised you never heard it, it was a huge hit back in the day, it was even a number 1 hit on the billboard hot 100. I really like it, then again i like a handful of cheesy music from the 70s (and other decades). I first heard it when i was a kid on that movie So I Married An Axe Murderer. Neds Atomic Dustbin covered it on the soundtrack.

also ironically, Kurt Cobain compared Nirvana to them mixed with Black Sabbath in the earlier days.