Jessie Eisenberg as Lex Luthor.
Not my work at all! All credit goes to "CAMW1N" on Deviantart, I just felt this needed to be shared! Below is a link to his gallery check out his work his skills are phenomenal.
http://camw1n.deviantart.com/gallery/
I believe this is a great representation of how Eisenberg could look as Luthor, lets just hope he can nail the character too!
Special thanks to user Interestein for informing me of the original artist.