If you’ve seen one monster shark movie, you’ve seen them all. Unless you’ve seen them all except Dinoshark. In which case, you haven’t seen Dinoshark.

We know, we know. You’ve got no realistic intention of seeing Piranha 3D, because it looks like it’ll be an hour and a half of breasts, gore and unconvincing CGI. But somehow, that doesn’t stop it being brilliant.

As the cinematic world waits breathlessly for the release of ‘mockbuster’ Mega Piranha, we at Best For Film have been bemoaning the trend towards making deliberately dreadful monster films (here’s looking at you, Sharktopus). With that in mind, we’re trying to reverse the trend by harking back to some of the most disastrous monsters of yesteryear, when filmmakers understood that all you needed was a leaky reactor and a comparison to the Russians to make your superbeast a dead cert. We’ve scoured YouTube for the best of the worst, and here they are: our top ten best worst monster movies!