I am planning for a trip to Las Vegas and I thought for fun I'd watch Vegas themed films. Just wondering what everybody's favorite film is or any suggestions of films you should see before going! TV shows with Vegas episodes would be awesome too!
Thanks!

Casino and Oceans 11(remake) for movies and I have a soft spot for Las Vegas the TV show.

The Hangover, Honeymoon in Vegas, and Vegas Vacation are my favorites.

There's also CSI of course.

The Hangover, Vegas Vacation, Swingers, Austin Powers

Casino

Leaving Las Vegas

Good ones have already been said...

The Cooler
Hard Eight (I think that takes place in Reno though)
Lucky You

Honey, I Blew Up the Baby

Ok, yeah. I got nothing that hasn't already been said.

The Godfather II
Fear and Loathing in Las Vegas
Melvin & Howard

Bugsy
They Came To Rob Las Vegas
Diamonds Are Forever

You guys are missing the ultimate Las Vegas movie...Showgirls. You're all disappointing.

Best Pole dancing ever

Best rape ever

Showgirls works even better if you view it as a quasi-sequel to Saved by the Bell.

Very Bad Things

Godfather II
Casino
Leaving Las Vegas
Bugsy
Lost in America
The Las Vegas Story (not really that good...but Victor Mature, Jane Russell, Vincent Price)

Murder Set Pieces

Swingers baby. So money.

Damnation Alley partly takes place in Vegas
Can't think of the name-Brian Keith. Kim Novack(I think). College students come up with plan to rob Vegas casino. 1950's.
3000 Miles To Graceland

Bugsy

Speaking of which...

Leprechaun 3

Don't forget to listen to some music to get you in the mood, especially on the flight in.

Frank Sinatra - Luck Be a Lady
Elvis Presley - Viva Las Vegas

Some others I'm forgetting, and personally I also listened to a few songs from The Hangover since that had come out the same summer I went.

The Stand. Not the best. But the Vegas setting was a lot of fun.

"Go"
"21" (though I don't recommend it)

Isn't Swingers more of an L.A. movie? They're only in Vegas for about 5 minutes.