2.
Pikachu quick attack cancel (QA-Cancel for short) -- There is 0 lag when pikachu hits the ground on a quick attack. It is like doing an L-Cancel without worrying about hitting R/Z >_>
QA-cancel -> Down-B is the easiest thing to pull off for me. Useful to hit characters who attempt an aerial approach on you. (QA cancel under them, then Thunder)
QA-cancel -> neutral b == useful for spacing as well as pressure.
QA-Cancel -> Smash Attack == The obvious use of this technique.
QA-Cancel -> Double Jump == Mind game potential. Instead of assaulting from the ground, you QA Cancel into an aerial approach.
QA Cancel -> QA == You can quick attack out of a Quick Attack Cancel. Really fast movement here.