Sarah Palin resignation speech: is she really that way, or is she acting?

Moving from Spanish bad politicians to US badder politicians, I found the Sarah Palin resignation speech video out there, and I can't avoid to wonder if she's really this way. I mean, seriously:

Can a person of this level prettend to become president of the first country in the world?

Seriously?

What are the requirements to be president of the USA?

Or is it true that, literally, anybody, can become president of the USA?

There were times were brilliant people were ruling the world, and now with Obama one could think that we are leading in the good direction again. But if this lady resigned in Alaska to focus on her forthcoming attempt to be president again... who knows, maybe Obama was a temporal flash.