: It was the first episode to introduce the "Canadian" art style (floppy heads) and established Canada as a recurring location in the South Park universe.
The episode you are referring to is titled . It originally aired on April 1, 1998, as the first episode of Season 2.
: Terrance, Phillip, Sally (Terrance's daughter with Celine Dion), Scott "the Dick," and Saddam Hussein.
You can find the full script for the episode on the archive.