Treehouse of Horror IV/DVD features

"Treehouse of Horror IV'" is included on the The Complete Fifth Season and The Simpsons: Heaven and Hell.

Commentary
DVD commentary is included on The Complete Fifth Season boxset with comments by Matt Groening, James L. Brooks, David Mirkin, Conan O'Brien, Greg Daniels, Bill Oakley, Josh Weinstein, and David Silverman.

Deleted scenes
Deleted scenes are included on The Complete Fifth Season boxset.

Animation Showcase
An animation showcase with storyboards and animatics as picture-in-picture or storyboard as full frame is included on The Complete Fifth Season boxset.

Animatic
An animatic with illustrated, with optional commentary by David Silverman and Wes Archer, is included on The Complete Fifth Season.

Original sketches
Original sketches from the episode are included on The Complete Fifth Season.