Slides
Permanent link to this comic: http://xkcd.com/365/
Image URL (for hotlinking/embedding): http://imgs.xkcd.com/comics/slides.png
Man: That chart explained the quantum hall effect. Now, if you'll bear with me a moment, this next graph shows rainfall over the amazon basin...
Narration: If you keep saying "bear with me a moment" people will take a while to figure out that you're just showing them random slides.
{{ Did you know that they could actually physically throw you out of SIGGRAPH? }}