He wouldn't play the famous villain Sinestro, but rather Dr. Hector Hammond. Superhero movies are coming up! They're being taken more seriously; and casting is definitely improving. Sarsgaard has done such films as Jarhead and Kinsey. And was nominated for a Golden Globe for his work in Shattered Glass.
I talked about the improved casting just the other day. We told you about Blake Lively's addition to Green Lantern, and I expressed my dislike in the move. This makes up for that a little bit. I like Sarsgaard and I think he will add a lot to this movie.