The Principal and the Pauper/DVD features

"The Principal and the Pauper" is included on the The Complete Ninth Season.

Commentary
DVD commentary is included on The Complete Ninth Season boxset with comments by Bill Oakley, Josh Weinstein, Ken Keeler, and Steven Dean Moore.

Deleted scenes
Deleted scenes are included on The Complete Ninth Season boxset. A hidden deleted scene is available by select the red button on the stereo.

Animation Showcase
An animation showcase with storyboards or animatics as picture-in-picture is included on The Complete Ninth Season boxset.