You know, at first, I thought that having Yamaguchi Kappei as L was a good choice on the behalf of whoever chose the voice actors.
After reading the manga some, and finally seeing L in the anime, I change my view.
It wasn't a good choice, it was perfect. There is quite simply no one who could have done L so well, and what with all the other obscure and eccentric characters he's played (Ryuichi Sakuma backs my point up severely), it's great to see that they realised that this character was pretty much made to be voiced by him.
<3 I'm such a Kappei fangirl.
And an "L" fangirl for that matter. He's so adorable....in his own little way.