If we go all the way back to 1980, the classic example is Heaven's Gate by Deerhunter director Michael Cimino. I was alive but way too young to have bought a ticket. It was a disaster. Cost over $40m and made only $3-4m. Bankrupt United Artists, killed the western genre, was a critical and commercial failure. Pretty much destroyed Cimino's standing as a director. However, it has since been critical re-evaluated, in part due to a couple of new edits. IMHO it's alright. A bit long, and no Deerhunter. But it didn't deserve the reputation.