On Sunday I ran the first part of our summer roleplaying campaign, based in an alternate version of the Wild West.
For my Deadlands campaign, I haven't really bothered writing much background (ie, any), just basing what happens from Westerns in my DVD collection. This seems to have worked quite well so far, with most characters being Western stereotypes 
In our first session, the character tried to run some prospectors from their land, facing off against a preacher who looked much like Clint Eastwood. We ended with two characters down and the last fleeing town with the Preacher in pursuit, a few hours behind after having his horse shot from under him.
Having run only fantasy for the last seven years or so, Its nice to have a change of scene. The Savage Worlds system is quick and simple, a great diversion from our usual games. So far it has been easy to create distinctive characters and keep the action flowing.
I just need to practice more American accents!