everlasting yayuhzz
Smash Champion
I do the move for different reasons. One, to stop their movement. If they are using someone like Wolf, it stops them, and then I get to hit them with the up+b. Two, spacing. They might not get slammed into the stage at the current angle they're at, and the up+b puts them there. Three, to throw them off. And if all of that isn't necessary, I do it to look cool. >_>^^ Oh yeah, well I am 100% Awesome.
But on a more serious note, when you are under the stage, you do side-b -> dolphin slash. Is the side b just for a little extra damage, or is there another reason?