A guy or gal that uncomfortably invites themselves into your personal air space, especially on a first date.
Friend - "How was the date?"
Me - "Horrible; at dinner, he sat, like, two inches away instead of across from me. Ick - what a space invader!"
by Kim K January 15, 2006
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Hey, did ya hear they cancelled Invader Zim just because Jhonen Vasquez wanted to start a Writer's union, evne though the show is immensely popular?
by DUN-DUN-DUN! October 17, 2003
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A Nickelodeon show that was once interesting but was ruined by crappy little girls that get their parents to buy them shit at Hot Topic and run around in GIR T-shirts and talking about how much they love the show, which they've never seen, and how cool this makes them.
"Oh, I love GIR so much! No, I wasn't alive when the series came out and I don't actually know the plotline, but liking Invader Zim makes me cool and scene!"
by Miles Edgeworth August 04, 2008
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A classic arcade game where you pilot a spaceship, at the bottom of the screen, shooting aliens that fly from a formation above you and dodging their own projectiles. I can't believe no one has tried to define this term yet.
(Example is from The Simpsons):

Willy: It's impossible for me to fire a pistol. If you'll check me medical records, you'll see I have a cripplin' arthritis in me index fingerrrs. Look at 'em! holds them up I got it from "Space Invaders" in 1977.

Wiggum: Aw, yeah. That was a pretty addictive video game.

Willy: surprised Video game?
by Dark Laith December 05, 2004
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1. One of the few good shows that ever aired on Nickelodeon. After it was canceled Nick just went downhill from there. It was canceled because some idiots got ticked off because they felt it was to dark and didn't recognize it for the genius work it was.

2. The meaning of life!
OMG Invader Zim is proof that there still may be hope for t.v. out there! Jhonen Vasquez is a genius!
by Devi96 August 06, 2010
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