Jonah Hex, based on a comic book that I've never heard of, is a movie about a Confederate soldier (I think, he may have actually been a Union soldier working as a spy, not really sure) played by Josh Brolin who, in a vaguely told back-story, betrays and shoots his best friend. Then his friend's father, John Malkovich, kills Jonah's whole family as retribution and brands his initials on Jonah's face. Jonah doesn't like having his enemy's initials branded on his face, so he burns them off and is left hilariously disfigured.
All of this is just back-story though, told through confusing and bizarrely edited flashbacks. The main chunk of this movie's 75 minute running time, that's right, SEVENTY-FIVE minutes, is spent on watching Jonah hunt down Evil John Malkovich to exact his vengeance and prevent him from using the most utterly absurd, impractical and nonsensical doomsday weapon ever conceived to destroy the United States.
Seriously, let's discuss this weapon for a minute. It was apparently designed by Eli Whitney and it involves launching a whole bunch of giant glowing orbs at a target, then launching another, different colored orb into the vicinity of the previous orbs, which ignites the initial orbs causing mass explosions. Also, the weapon requires a giant ship to house it. Ridiculous.
Anyway, if you're looking for a (very) quick mindless and disposable entertainment fix, I can think of far worse ways to spend your afternoon. This is 75 minutes of horses with Gatling guns, dynamite launching crossbows and Meghan Fox (whose talent is as non-existent as her waist) in a corset.
It is what it is, and I was entertained.