Well, when asked to post some of my favorite sites this is usually one of them. But here goes.
I have to plug http://www.uifz.com because I know the creator. http://www.pointlesswasteoftime.com and john cheese's magic pimp bus (found in a link lower down on the page) have some of the most hilarious writings, not to mention a stellar forum where I was first linked to this site!http://www.albinoblacksheep.com, just for its flash. especially Forehead Shavecut
Lastly, http://www.snopes.com to debunk every rumor and urban ledgend out there.