I didn't really like Elfen Lied either. Its attempts to shock the audience fell flat on their face because they show so much of the violence that it desensetizes you, ruining any kind of suspense that would be had otherwise. After about the 50th body is decapitated with unimaginative blood-spillage and spray, you start to roll your eyes.
Seriously, did this show ever hear of the age-old philosophy in that what you DON'T see can often be more terrifying? That was thrown out the window even further when they revealed the telekinetic arms in episode 4.
And the attempts at comedy also fell flat on their face, because the preceeding events were usually someone getting dismembered. It's like it tries to be two shows in one: Girls Bravo and Gantz.
Izzy Mandelbaum: How 'bout that, huh? The WORLD'S greatest dad. My son made it for me.
Jerry: That's very nice.
Izzy Mandelbaum: The best in the world! Which means I'm better than just number one.
Jerry: Well, I don't know how official any of these rankings really are.