As much as I love Elfen Lied, I think if it were to be made into a live action movie, it would probably be banned. Also, the amount of blood needed would go way over their budget xDthis topic got me thinking.. how would Elfen Lied end up as a live action movie?
Elfen Lied only features humans(although a certain race are "mutation" of the human race, but they look the same except for the horns on their heads and bright orange/pink hair color)
their Vectors can be replicated with computer effects really easy as they are transparant, and this kind of effect has been used pretty often in movie making
the only thing that would make Elfen Lied a "bad" live action movie would be the blood and gore(like people being ripped to pieces and stuff like that) which is usually extremely horrible in real life action so it won't really be a "rated T for teen" movie if you know what i mean, and that way you'll lose a huge amount of original anime fans
the anime was brilliant.. i wonder how a live action movie would turn out, personally i think it would be interesting to say the least
you're right, that Spike guy has a good personality when acting.. but i don't think he fits Piccolo, he'd be a great Vegeta to be honest.. he does look like the "in-your-face" type at least in the role of "Spike"
however, in the first movie doesn't appear, but it's supposed to be a trilogy and i think we'll see the legendary "it's over ninethousaaaaand" scene in one of the follow-up movies
Also, they'd have to hire a lot of cute child actors, and they all suck, admit it. You just can't replicate characters like Nana and Mariko into real life.
I thought the Death Note movies were quite good, however, they're making a hollywood remake....
Also Dreamworks have the right to a Ghost in the Shell live action, that could really work.
I'd say anime that could work as live action are:
Cowboy Bebop - It doesn't rely on too many special effects that these days aren't too hard to get, and with the right actors it could be really good
Ghost in the Shell - If the matrix could work, GITS will work.
BLEACH - Yes, I know this is in the no pile. However, I think if they can make Dragonball work (still doubt they will) then they could easily make a BLEACH movie. Keanu Reeves as Byakuya!
Gundam - I know there has been a live-action failure already, but with the recent success of Transformers I think they really good make a good live action Gundam movie (or series of movies).