Editor's note: To borrow a line from The Band's great old song "Ophelia," why do the best things always disappear? Invader Zim was dark, bizarre, twisted, award-winning and beloved by its fans, so of course Nickelodeon cancelled it. It was simply too cool for mainstream American tv, so let's consider it a compliment that the censors scrapped it. Thank you, creator Jhonen Vasquez for all the unforgettable moments. We're proud to bring Zim fans this awesome wallpaper collection from the cartoon your mom most wanted you to stop watching!