Peter Norvig has produced a Powerpoint presentation of the Gettysburg Address (norvig.com/Gettysburg). This extract from a lecture has the Gettysburg Address twice: first without Powerpoint and then with. It demonstrates that the use of modern presentation tools can detract from the message you are trying to impart.
Content: (1) context of the Gettysburg Address; (2) the Address without Powerpoint slides; (3) brief analysis of the Address; (4) the Address with Peter Norvig's Powerpoint slides.