Can You Find Every Internet Meme Hidden in This Picture?S

Alright, I need some help here. I've definitely been around the Internet quite a bit, but I don't think I can figure every single meme hidden in this picture. Like that poster to the right of Pedobear. What's that about?

You can click the image for a bigger version.

This is actually making me suspect that I've been lurking in all the wrong corners of the web, because I have no idea when House became a meme. [Flickr via Ace of Spades HQ via Neatorama]

Update: As some of you have pointed out, this image is a collection of memes loved by the fantastic folks of reddit and created by the talented licenseplate as part of the reddit secret Santa gift exchange. Licenseplate actually emailed me to say that there is a "final version" of the poster coming soon (and it sounds like it'll include even more of the craziness adored by redditors as well as the rest of us.) So, we'll keep an eye out.

Oh, and it turns out that the poster next to Pedobear is Karmanaut, reddit's resident comment karma hog. I think I haven't been lurking over there enough if I missed that reference.