Warning: The interview is about 42 minutes long.
http://www.dvorak.org/blog/2010/02/05/video-full-unedited-interview-of-jon-stewart-on-the-oreilly-factor/
http://www.dvorak.org/blog/2010/02/05/video-full-unedited-interview-of-jon-stewart-on-the-oreilly-factor/