Superhero blockbuster The Avengers has topped a list of the most mistake-ridden movies so far this year.
Diligent fans of the hit superhero movie spotted 15 blunders, placing it ahead of The Hunger Games, which contained 13 on-camera slip-ups, and Underworld: Awakening with 10.
Rihanna's Battleship is the mid-year's fourth most blunder-ful movie, and Will Smith's hit Men in Black III rounds out the top five.
Among the errors moviegoers spotted and passed on to website MovieMistakes.com were an out-of-date Spanish flag in Men In Black III and a location gaffe concerning a billboard in Battleship.
Billboards are not permitted in Hawaii, where the film is located.