For 10 points, name this program for making slideshows, included in Microsoft Office.
Whitfield Diffie of Diffie-Hellman fame claims he invented the antecedent of this market leading software at Bell-Northern in 1981.  This software was commercialized by Diffie's colleague Bob Gaskins and his company, Forethought, Inc.  An old version of this software contained the "View the Macarena" Easter Egg.  Peter Norvig argued that this software "lowers the ceiling" as much as it "lifts the floor" in an essay that imagines (*) Abraham Lincoln using this software.  Lawrence Sellin was fired from his Army post for a rant he wrote about this software, which used to come with an AutoContent wizard.  The "Cognitive Style" of this software, including its low rate of information transfer, is discussed in an essay by Edward Tufte.  Competitors to this program include Prezi and Keynote, the latter of which was seen in An Inconvenient Truth.  For 10 points, name this program for making slideshows, included in Microsoft Office.
Whitfield Diffie of Diffie-Hellman fame claims he invented the antecedent of this market leading software at Bell-Northern in 1981.  
Microsoft PowerPoint [or Presenter]