Presentations and PowerPoint are an integral part of corporate suffering in cubicles, the reason why they get featured often in Dilbert cartoons. Here is today's cartoon.
A reminder of the excellent post by PowerPoint Ninja back in 2009 with dozens of cartoons on the subject. In exchange for using the comic, here is an (affiliate) link to everything Dilbert on Amazon.
UPDATE. After a comment by Rowan below: the Dilbert site is now searchable, and you can actually buy comics for your PowerPoint presentation, for a reasonable price. As an example, here is a search for all PowerPoint-related Dilbert cartoons going all the way back to 1989.