Watched this after having seen 65 episodes of the sequel series, and I still found it hilarious. The super low-res slideshow children's book animation, oddly, did not detract. Rather, it imparted charm.
The preview after the show's end caught me off guard and I almost blew coffee all over the keyboard, it was that funny. A style of humor that might not be for everyone but, if it's your cup of tea, don't eat or drink while watching.