Just a couple of times in your lifetime, you will come across a movie so bad, so horrendously, appallingly bad, that your eyes will light up and your mouth will start to salivate in the delight of it all.
Grim is one of these movies.
Right from the opening credits you know it, and by about half way through, you are beyond amusement - your lower lip will hang, slackly separated from your upper one, and your eyes will be vacantly gazing at the screen. Your brain will hate you for watching this movie.
The opening credits look like a cheap screensaver, and go on for minutes. No action, typical orchestral horror music, a black screen and some words. Finally, it finishes, and an inexplicable four second shot of some kind of underground stone casket is shown. It looks like polystyrene. The first real scene is the old ouija board trick with a bunch of teenagers in a bedroom. Well, actually, it's two guys in their mid-thirties and some 21-year-old girls, in what looks like a very cold and dark basement. There is no reason for them to be together, to be there, and to not have grown out of using ouija boards.
The acting is woeful, the editing looks deliberately shoddy (a few shots run on for about 3 seconds too long, after the action has finished, leaving you awkwardly staring), and the visual effects...well, I don't know whose brainchild the Grim actually was, but I'm guessing he's made of rubber and had a terrible childhood.