You will be spoilt for choice, unfortunately so much so that you will probably need to go back again and again to see everything
For me, the highlights have been,
Las Vegas (make sure you time it to land just as night falling, flying parallel to the strip is an amzing sight!!!)
Grand Canyon (never get tired of this one)
Hoover Dam.
Santa Monica (the land of 'the beautiful people' - I remember EAs eyes popping out when we went here
)
Sedona
Catalina
Big Bear
And thats just a few off the top of my head....
J.