This movie (which, while known as Ghost Rig, is originally titled The Devil's Tattoo) isn't all that amazing, not by any stretch. I saw it many years back on Chiller, and all-in-all, it never really came to mind, aside from the basics of the plot (a group of environmentalists take over an oil rig, only to discover nobody's left, and are soon picked off by an evil force that goes from body to body). Still, it's not exactly a bad movie either. It's main problem is how unoriginal the premise is. An evil entity going from host to host, pitting those left against each other, unsure of who they could trust, isn't exactly new territory. Aside from similarities to The Thing, which are fair enough, I'm also reminded of the classic Horror Express (from 1972). Even so, The Devil's Tattoo is passable.
Though it's not overly thrilling for most of the film, I do think the last twenty minutes or so (which includes more than one plot twist) were pretty enjoyable. All-in-all, this movie's around average, maybe a little less. It's quality certainly isn't worthy of praise, nor most of the acting (Noel Fitzpatrick in particular does a good job, though), but it's a good movie to pass the night with.