Every movie has some mistakes, of course, but what about the much-beloved filmed-in-Astoria iconic flick, "The Goonies"? Aficionados of the movie may want to take a seat and keep the smelling salts handy: The MovieMistakes.com website lists 220 goofs in the Goondocks in excruciating detail (moviemistakes.com/film558).
While most are continuity errors (i.e. when something or someone pops up looking different, or in the wrong place), there are also quite a few other problems, such as a corpse who blinks.
If it makes you feel any better, Goonie fans, "The Wizard of Oz" (1939) has 431 bloopers.