In the Star Wars movies stormtroopers tend to die from a single hit no matter from what weapon or on what location. A single blaster hit anywhere on their armor is all that is needed to take them out. Even hitting them with a wooden stick or small stones seems to be lethal to them.

If that is the case, what is their armor good for? Has there been any example of a stormtrooper's armor protecting him from any harm?

Durasteel armor would be very effective against [gunpowder weapons][1], this is why slug-throwers are [hardly ever used][2], but as they don't face such weapons on a regular basis, what threats are on a battlefield against which the stormtrooper's armor provides protection?


  [1]: http://scifi.stackexchange.com/questions/13690/why-dont-they-use-gunpowder-in-the-star-wars-universe
  [2]: http://scifi.stackexchange.com/a/13699/4004