h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

This is a list of good invasion tread starters for my own referance

The sky grows pitch black as the fury and might that is the swarm decends on (organization name)

The ground trembles as the fury and might that is the dinezens of the hellish planet of Char decend/converge on (organization's name)

*A Evilminion sneaks behind (name of leader of organization) and paints target on (his/her) back*

A female voice is heard saying "Nuclear launch detected!"

"Oh my god he's wacked"

"If I wanted your d*mn opinion I would have beet it out of you"

"Hey do you know directions to (organization whos leader you're talking to right at that moment). We're going to invade them and rape and pillage their land."

I still like this one from the MotMV invasion...
SuperMoo Aproches A2036611 with a very massive army of L.A.R.D.W.A.R.R.I.A.R.S.(Large Always Ready Devious Warriors Accessorized Robotically Resourceful In Action-packed Repetitive Sequels) as well as a large number of trebuchettes, Spam-a-pults, and other gadgets,gismos, and stuff...
SuperMoo orders L.A.R.D.W.A.R.R.I.A.R.S.:

[whim:set up trebuchettes]

followed by

[whim:arm trebuchettes with Spam]

[whim:FIRE!]

All of a sudden a rain of spam is seen hurling down from the heavens onto the Masters of the Multi-verse.

One such projectile, taking a parabolic tradgectory and falling at a rate of g [when g is the acceleration due to earths gravity nearthe surface], flies down and slames into the side of a randomly placed portipotty, knocking the portipotty with its contents onto it's side...conveniently the door side...random shouts are herd eminating from the bowels of the portipotty...

SuperMoo chuckles at the thought of seeing the hilarious image of a person covered in blue liquid mixed with portipotty contents stepping out of the above mentioned portipotty...

We're the Evil Army of H2G2 and welcome to the invasion of you!

this is acient history

then why are you here?