Just went to Anime Planet and put together a list of series, movies, and OVAs I've watched to the end. The total came to 54. Granted, it counts individual seasons separately (for example, Black Lagoon is counted twice and Genshiken is counted 3 times), but still, I had no idea I was that much of a weeaboo.
EDIT: Bakemonogatari is pretty awesome. I'm not usually into series with such a surreal atmosphere all the time, but this series somehow hooked me from the start. I'm only on episode 7 right now, because it's really hard to watch more than 1 or 2 episodes at once.