The two-disc set is loaded with extras that will delight fans of the show, including commentaries by Vasquez and several of the story and voice artists, a second "commentary" of pigs grunting, subtitles in Irken, and the original pilot for the series. The uninitiated may find Invader Zim suggests a cross between Dexter's Laboratory and Jimmy Neutron re-imagined by Tim Burton. The bizarre designs, over-the-top vocal performances, and bodily function jokes are not for the faint-hearted, but they're not supposed to be. (Unrated, suitable for ages 10 and older: cartoon violence, gross humor) --Charles Solomon