I almost always have some sort of obsession - a certain movie, song, artist, website, excersice form or whatever. Sometimes I have several obsessions at a single time. This mostly happen when I have a certain obsession that have kept with me for a longer period of time. And this kind is currently my only obsession.
For a lot of people (most people?) that obsession would be Facebook. But for me, it's none other than memecenter. I go through this site several times a day and I go through each and every featured meme on this site. I still haven't gotten around to making memes myself though.
If you like humor (who doesn't?), check it out if you haven't already.