I don't know how many of these movies I've seen, that take an interesting premise (albeit one that follows the monkey's paw trope... a story dating back more than a century), and completely falls apart in the final act. I mean, practically everything out of Hollywood does that, but this is a low budget indie horror film shot in Louisiana.
Ok, Jake's former boss, who he may or may not have gotten fired, gives him a monkey's paw... with vindictive undertones. I really enjoyed how the first wish led to trouble (namely, the death of Jake's co-worker, Cobb), which leads to more trouble, the second wish, to bring Cobb back to life. Which, well you get the idea. If you've seen Pet Sematary (and the like), you know how this re-animation stuff goes. Some of Cobb's killings even made sense within the scope of this story, but what we ultimately get in the end, is a psycho killer on-the-loose, killing everything in his path. *Yawn*
And the end result of the final wish? WTF. The writers definitely ran into a brick wall around the 55-minute mark of this one. If you have a craving for this sort of story (in movie form, that is), check out the Wishmaster series, especially its off-the-rails 3rd sequel, Wishmaster 4: The Prophecy Fulfilled. Watch out for some crazy gore, which this film was severely lacking. Hell, watch the Monkey's Paw segment in Treehouse of Horror from The Simpsons, for a genius take.