There is one other requirement for a movie to be considered one of the worst ever: it must keep getting worse. By this, I mean that it not only must keep getting worse while you are watching it, but it must, upon subsequent viewings, seem even worse than the last time you saw it. That is what distinguishes Ishthar from Gigli and Showgirls from Swept Away. Widely viewed as one of the worst movies ever when it was released in 1987, Ishtar actually has several comic moments. Gigli doesn't. Similarly, Showgirls has a certain campy allure that grows a bit each time I see it. Madonna's Swept Away doesn't; it seems more amateurish on each viewing, like a morass that starts out as a quagmire, then morphs into a cesspool and finally turns into a slime pit on the road to its ultimate destination in the bowels of Hell.
Why not next year do excruciatingly bad films? That might be fun.