go oogle the pirate chicks outside treasure island -> realize two hundred 13 year old children are doing the same thing -> get disgusted -> and then...
as a ton of people have mentioned, do cirque (mystere, zoomanity, whatever)
penn and teller = overrated imho
sieg and roy = fvcking retarded, do they even do shows anymore?
lots of good impersonators, find whatever floats your boat
hit the new rides at the stratosphere
gamble to your heart's content, but stay away from big money tables if you don't have the kwan - proportion/distribute your money before you get there, and stick with it
DONT GAMBLE ON CREDIT
incredible strip joints, lounges, decadence goes up with your willingness to pay
seedier districts - you can find anything and everything
rent a roadster/sports car if you're there for awhile, not much beats just rollin down the strip in a murcielago
live it up