You may want to take a look at:
LEAVING LAS VEGAS (MikeFiggis1995)
SHOWGIRLS: (Paul Verhoeven 1995)
CASINO  (Martin Scorsese 1995)
OCEAN'S ELEVEN (Lewis Milestone 1960)
LAS VEGAS WEEKEND (Dale Trevillion 1985)
BUGSY (Barry Levinson 1991), which covers Ben Siegel's creation of Vegas in the forties.
There are also many B type movies with a Las Vegas background (eg: Las Vegas Story) which were shot in the studio.  Of course, there's a chance that viewing some of these movies may change your mind about visiting!  

> From: Erica Tomlinson <[log in to unmask]>
> To: [log in to unmask]
> Subject: Re: Vegas movies
> Date: Monday, February 01, 1999 5:56 PM
> I am planning a trip to vegas this sring, and want some good movies to
> watch that are filmed there or are about the city itself, any good
> suggestions?
> Thanks
> *****************************************************************************
> Erica Tomlinson
> Secondary Math Education
> "You have brains in your head.  You have feet in your shoes.  You can
> steer yourself in any direction you choose." -Dr. Suess
> *****************************************************************************
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> Screen-L is sponsored by the Telecommunication & Film Dept., the
> University of Alabama.