The 2011 remake of the 1985 movie Fright Night takes place in Las Vegas. The plot involves a high school student suspicious that his new next door neighbor is a vampire. The student enlists the help of a Las Vegas magician to help stop the supposed vampire.
I'm not sure how much Las Vegas will be featured in the movie, but it's fairly prominent in the trailer. It looks like one of the scenes might take place in a Las Vegas club, and with one of the characters being a magician I bet there's a magic show scene at some point.
Fright Night comes out on Friday August 19, 2011. If I see the movie I will be sure to update this post with a detailed rundown of the Vegas scenes.