The optimal way for you to become a corporation is to change your status from natural person to legal person (and that leads to a possible immortality, isn't that cool?)
Though beware that you will anyway need registered agent services, which range from $50 to $300 annually.
Also forming corporation does not end with incorporation, it only starts with it. You will have to meet all the regulations, like having some paperwork done; accounting and annual reports + franchise tax, etc.
But first — ask yourself — why do you need to incorporate right now, what advantages are looking for? Are you ready for some disadvantages?
People sue each other for the silliest reasons these days. I'm creating a MMORPG for the iPhone. Suppose one person says something mean to another person (MySpace Fiasco) or someone gets too addicted to the game (EverQuest / WOW), I don't want to get personally sued (and in this current time, people sue each other for trivial reasons) -- so it's about protection.
The optimal way for you to become a corporation is to change your status from natural person to legal person (and that leads to a possible immortality, isn't that cool?)