Artemis Fowl (according to the official site):

Artemis Fowl: Asa Butterfield

Butler: Dwayne Johnson

Holly Short: Freema Agyeman or Natalie Dormer

Commander Root: Robert De Niro or Jack Black

Foaly: Johnny Depp or Jack Black

Mulch Diggums: Jack Black

Opal Koboi: Natalie Dormer

Juliet Butler: Rosie Huntington-Whitely

Angeline Fowl: Rosie Huntington-Whitely

Trouble and Grub Kelp: Hugh Jackman and Jonah Hill

...or other unknown actors!! This is a real movie, and it should be coming out in a year or two. Right now they are finishing the script and getting ready to cast roles.

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The Legend of Zelda (any):

Link: Orlando Bloom

Zelda: Cate Blanchett

Ganondorf: Ian McKellan

Ghirahim: Todd Haberkorn

Yes, most of them are from The Lord of the Rings. I was watching it recently and thought they'd be awesome to play the part. But I have to admit that it would be AWESOME if the voice actors from the game would play their roles in a movie!!!

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Charlie Bone:

Charlie Bone: Asa Butterfield

Manfred Bloor: Adam Driver