Also, will you have people looking over your shoulder while you're watching? Because if so, don't watch Elfen Lied. Literally, I honestly think it crosses the line into pedophilia several times.

Still a superb series though, I wrote an essay on it in high school. Ergo Proxy is neat, but after awhile all the plot discontinuances and unexplained phenomena pile up so much that I just gave up on it. Kind of like Soul Eater; watched the first season, skipped the second season entirely because nothing at all interesting happened until the final two episodes, which were absolutely awesome. Maybe I should skip to the end of Ergo Proxy and see if the same thing happened.
But I'd also recommend you check out Bakemonogatari. It's currently airing and I love it. First episode is kind of on the fence but after episode two I've been hooked. Hope they can keep up the momentum for the full season.
Anyway, I'm absolutely addicted to the Asphyxiated Insanity Soul Eater AMV.
I think I'm going to buy the song.