L is actually more freaky in the movies, he is...err..not that cool, he's more of a freak :P
General changes* There is no time jump, so the events of the movies all happen over the same time span as the first half of the manga.
* Instead of the Death Note being passed to Higuchi, it was passed to Takada.
* Teru Mikami, Near, and Mello do not appear in the movies.
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A clip from the movies :)
http://www.youtube.com/watch?v=HlBXFg_1QLsenjoy