Some movies are panned on release and close shortly thereafter. Some are "classically" bad,scorned from the get-go. "Glitter" and "Gigli" come to mind from relatively recent years.
Go back a little further and we find "Ishtar" a big budget Dustin Hoffman / Warren Beatty epic homage to the Crosby / Hope "Road" movies, with the reputation as one of the worst movies ever made.
I liked "Ishtar". I thought there were a lot of laughs. I've seen it several times. I liked the blind camel jokes, not to mention the pretty much awful nightclub act from Messrs. Beatty and Hoffman.
How about you? Any movies thought of as really bad that you like?