I’m at ROFLCon in Boston this weekend and there are a number of really cool guests here and speaking. Some quick names/groups: Leeroy Jenkins (Ben Shulz), Homestar Runner, xkcd, StuffWhitePeopleLike, I Can Has Cheezeburger, LOLCode, LOLCatBible, Cyanide & Happiness, and many more.
The conference has been fun thus far with some great swag; loose talks; insights into surviving fame, growing with your community, and shrugging off hate; monetization; humor; etc!