Although I 愛 the アニメ L, the movie L（デスノート） seems to be もっと見る smart and learn もっと見る from his actions.
For one in the movie L（デスノート） finds a way to out smart kira, Light. によって risking his own, something i beleve he would never do in the anime. I say this because in the アニメ he feels he can waste any life to get his case solved (example: Lind L（デスノート） Taylor) and doesn't relize that this is wrong even before he dies. but in the 3rd movie between the 21 days he has left to live he learns he can't let the little girl he likes just die, because he feels her life is valuble.
Another difference is, sadly, that the アニメ L（デスノート） thinks he can solve any case without help (which his daeth in the アニメ shows he can't) But in the movie he learns (from working with the asian FBI) that he can't change the world によって himself but needs the help of others.
I'm not dis'n the アニメ L, but i just like the movie L（デスノート） better because he lives longer. since L（デスノート） is my favorite. But L（デスノート） in both movie and アニメ i love. they are my fav chararcters! (^o^)