WIRED's Nancy Miller said it very well in a recent tweet: Yes, Cowboys & Aliens, I will see you based on this trailer. I'm with you, Nancy. Directed by John Favreau, starring James Bond and Indiana Jones? I'm innnnnn. July 29th, get your arse over here.
Update: Hey, unfortuantely, YouTube disabled embedding on this trailer. So you have to go here to see the clip. Sorry! Totally worth it, though.