A movie trailer, by its very definition, is a savvy marketing tool in which the best bits of an upcoming flick are edited together to make audiences want to happily hand over their hard-earned cash. It's a fairly simple process and one that is usually handled effectively and efficiently - even if the finished movie is a complete waste of time.

From low-budget to blockbuster, the unwritten rule of the trailer is so transparent and easy to emulate that you'd have to be a bit of a moron to screw it up... With that in mind, ladies and gentlemen please allow me to introduce you to the stunningly mishandled promo for Gooby.

Featuring a cast of complete nobodies (young star Matthew Knight previously appeared in, ahem, The Grudge 2 and 3) and recognised names trying to pick up some extra pocket money (Robbie Coltrane and Eugene Levy you should be ashamed!), it's the tale of a young lad who moves into a new house and becomes convinced it's filled with evil space aliens. As luck would have it though, there's no such thing as evil space aliens - as for slightly creepy, poorly realised talking bears, well, that's another matter.

Basically it's one of those overcoming-your-fears-through-the-power-of-friendship flicks so beloved by really boring families (The Dove Foundation gave it five family-approved marks out of five!) that would make any right-minded person want to claw their eyes out in despair. Now, even with the knowledge that you'd rather donate a lung than watch such a cackhanded movie, we still can't get over how they expected anyone to shell out cash after witnessing the spectactularly appalling trailer.

From the completely inchoerant plot to the inappropriately sombre voiceover, via a series of badly edited pratfalls and a soundtrack so sugary that it's liable to put you into a diabetic coma, it's incompetence is simply stunning.

Still fancy taking a look for yourself? Well, don't say we didn't warn you. It's pasted below...