The role of Light will be played by Brad Swaile (Quatre-Gundam Wing, Rock-Black Lagoon, Nightcrawler-X-men: Evolution). Alessandro Juliani (Prince Toma-Ranma 1/2 The Movie 2) will play the role of "L". Brian Drummond (Allen-The Vision of Escaflowne, Andy Waltfeld-Gundam Seed) will play Ryuk.

Also:
Misa: Shannon Chan-Kent
Rem: Colleen Wheeler
Soichiro Yagami: Chris Britton
Matsuda: Vincent Tong
Mogi: John Murphy
Raye Penber: Michael Adamthwaite
Aizawa: Trevor Devall
Ukita: Jeremy From
Naomi Misora: Tabitha St. Germain
Ide: Brian Dobson
Near and Mello not cast yet.

Death Note DVD Vol. 1 will be out November 20.

source: icv2, ANN