Bloomberg:

It’s hard to think of another movie from the past 50 years that’s had a bigger impact on modern comedy. Spinal Tap pioneered a mock-doc genre that’s influenced everything from the long run of improvisational films directed by Guest (Waiting for Guffman and Best in Show among them) to docu-styled sitcoms such as The Office and Modern Family. This made it all the more surprising when, about four years ago, Shearer became the first of his fake bandmates to learn lesson No. 2 in Hollywood: No matter how well your movie does, there’s no such thing as net profit.

Spinal Tap is one of the most fun movies you’ll ever watch and it’s a travesty it’s creators have been screwed out of millions of well-deserved dollars.