The term "turkey" was long ago coined to describe either bad movies or huge financial flops, and there is a long list of them. (Although Kevin Costner movies like Waterworld or The Postman could better be described as "ham.") I combed through the trash to find seven treasures that I would actually recommend; these are the Butterballs.
1. Ishtar (1987, Elaine May)
Today, it's actually fairly difficult to see Ishtar, that "musical comedy" starring Dustin Hoffman and Warren Beatty, even if you wanted to. It hasn't yet been released on DVD (except in the UK), and I bet most of those old VHS tapes have been carefully disposed of. But Elaine May's famous flop deserves reconsideration, if only because recent years have shown that May's first three films, A New Leaf (1971), The Heartbreak Kid (1972) and Mikey and Nicky (1977), were masterworks way ahead of their time.