Necromancer, you douchebag. How the f*ck can you have a burger poll without including the all-mighty Herfy's?
Anyway, my other three picks are:
Burger King - Far and away the BEST mass-franchise fast food chain out there. Hands down. Burger King eats your mom for breakfast and defecates her remains on your dad.
McDonald's - Best fries out there. Even better than Burger King. Plus a lot of nostalgic value for me.
Fatburger - Because Ice Cube said so.