And ummm.... that's WHY it got banned? There were also other episodes that you can download online, that weren't released on Nick, for obvious reasons once you've seen it. Invader Zim is definitly a cartoon that should be shown on Adult Swim.
It's ironic since, i was watching Romeo yesterday, and the maid of the insane smasher says to Gary "The insane smasher is a white guy, you're a black guy, then gary says "yeah i know, he thinks he's white but he's really black". Anyways it's on at 11:00 PM here in Aus.