As I'll be attending Fan Expo Canada tomorrow, which hosts the 501st Legion Stormtroopers, it seems appropriate to mention this excellent Star Wars fan film, A Light in the Darkness. Only part 1 is up so far, but it's an interesting story and you can tell a lot of time, effort and money went into it.
The story follows the betrayal of the Jedi on an outpost mining colony and as it's only 20 minutes, head on over and give it a watch.
Not convinced? Here's the trailer.