It's to be rumoured that Lucas will play the role of Alec in New Moon(Twilight) 2009 movie. Alec was Jane bloodsucker brother. You can find more at linkdo you thinks?

idk because i know fo sho dat Dakota Fanning is playng Jane so........idk? do dey look alike? maybe its true i guess we'll just have 2 find out wen da movie comes out

Marc Blackwell (Lucas' best friend) said on Lucas' official forums that it was just a rumour. :) You can see the post here: link