Movies that you thought would be bad, but turned out great

The trailer/previews for Midnight Run (1988) made it look like some silly-ass comedy.  (The movie poster below doesn't help either.). So I skipped seeing this one in the theaters.  A year later, my parents rented the video and lent it to me. The movie was great!  I now own the DVD and have watched it dozens of times over the years with friends and family.