Maui - dine, hike, sightsee, helicopter rides, snorkeling, luaus, because its just gorgeous
Las Vegas - Absolute BEST buffets in the world (but not cheap anymore like they used to be), win some money at black jack, take in a couple of good shows
Sydney, Australia - It looks like a cool city to vsit and I would like to swim with the sharks on the great barrier reef.
Amsterdam - I saw it on Rick Steve's Travel show on PBS and it looks like a beautiful, clean, old-worldly yet modern place. The people seem nice too. I'd rather go here than to europe. From what I've seen, europeans can be downright unfriendly.
I will keep the last place to myself because it would be a religious pilgrimage to somewhere I'd rather not mention.