Most famous PowerPoint presentations of all time

I have started to compile a collection of famous Powerpoint presentations. Here are the first few. Peter Norvig's Gettysburg Address is my vote for the most famous. But Tom Farmer and Shane Atchison's hysterically funny Yours Is a Very Bad Hotel should at least be a runner up. More sobering is the tile assessment of the Shuttle Columbia (the presentation slide made famous by Tufte's analysis is page 6). Another famous presentation should be Karl Rove's The Strategic Landscape, about the then upcoming 2002 elections, from a CD-ROM that was supposedly found on a street corner near the White House (Rove's presentation starts on page 11).
What else should we add to this list?