I don't think there really is an easiest dance style. Each style requires different techniques in order for you to be good at it.
the 'dad' dance..
just stand their, jump a bit and wave your arms.
ask your dad to show you.
no THE easiest dance is the cha-cha slide. you cant mess up! lol
Id have to say line dancing, its simple and easy to learn.
the shimmy XD