Conspiracy Weary Matt exposes Joel to a whole list of Conspiracy Theories that tie in all of the crazy stuff that's been happening around the office. You'll get most of it if you've seen previous shorts (of the "saga"). (The Recording Session; Spoiler Alert; Saving Face; Catch; Lunch Bunch; Warning / Error; Hotel Buddies; Blur and Secret Door; Pongo)
I went through the entire series because of this post. Nearly all of them were really clever and hilarious, especially the mind-reading one's punchline.