Alaska isn’t really known for having a lot of immigrants, either legal or illegal. I find it quite comfortable, but most find it quite inhospitable country (climate-wise).

Executive Experience. She Is a governor, she Was a mayor. She IS a commander in Chief already.
Let’s keep in mind that Alaska is the only state with its own and completely separate military: The Alaskan Territorial Army. Not National Guard (they have that, too), Territorial Army. She has the ability to decide to unilaterally invade or bomb someone already. I think we can trust her with our US Military.

Energy: She’s our most vocal and best spokesperson on drilling. She is aware of what drilling does and will do to the environment and how to mitigate the effects while still drilling.

Global Warming/Climate Change/whatever:
Alaska’s government has had to fight environmentalists for everything they have ever done, everything they do every year, and everything they Want to do. To make it in Alaska’s politics, you either have to know how to handle those crazies or join them. She’s not on their side.

Abortion: Already been said. Hardcore Pro-Life. Good for the base.

Foreign Affairs:
No “foreign policy experience”? You’re kidding, right?
She fights with Canada, China, Russia and Japan over fishing. She fights with Canada and Russia over drilling. She fights with everyone over mining. She fights with Canada, China and Japan over freight traffic.
I think she has more foreign policy bona fides than anyone else on either ticket.

Economy:
As Achance has spelled out in several posts, Alaska’s economy depends on the state government doing the right thing. Too much action and they foul it up. Too little and they foul it up. It is a relatively small, though powerful, and highly dynamic economy. You learn REAL quick when you’ve messed up or done something right.
Tourism, oil drilling, mining, and fishing are the major sectors of Alaska’s economy. They respond very quickly to whatever the government does. If she can balance those, she can balance our economy.

Taxes:
Alaska has no income tax and has a profitable budget (even without federal dollars). I think she’ll be in favour of cutting taxes.

And finally, by choosing her, McCain has reminded Alaska that the Lower 48 remember that Alaska IS a part of the Union. Something Alaskans have been wondering about for awhile.