You may not know this but Cowboys and Aliens is actually the prequel to Reptiles and Samurai. Okay, that's a lie, but that song's been stuck in my head for the last two days. http://www.youtube.com/watch?v=sYdKrvdvFwk
This movie has a fantastic cast featuring our favorite Bond - Daniel Craig; our favorite Star Wars cast-mate -Harrison Ford; and the person who almost made Tron worth seeing, (the new Tron,) - Olivia Wilde; and a couple other peeps, including Hammer from Iron Man 2 - Sam Rockwell, and Sister Encarnacion from Nacho Libre - Ana de la Reguera.
This movie was exactly what I thought it would be. It was good. It also followed the classic "western" plot to a tee. Which is that a lonely cowboy rides into town from who knows where. He's the bridge in-between the big-bad and the simple town-folk. And I'd tell ya more, but it hasn't been 10 days yet. http://boonmovies.blogspot.com/2011/06/spoilers-and-10-day-rule.html
This movie is directed by, (as you should know already,) Jon Favreau (left.) If you don't know who that is, this website should help you out - http://lmgtfy.com/?q=who+is+Jon+Favreau (you can't expect me to tell you everything. ;) )
But I will tell you to go see this movie.