Justin Bieber showed off his dark side last night with the first of several guest-starring stints on CSI.

The singer proved his acting chops in the season premiere, using his smoldering puppy-dog eyes to do a lot of his talking without words.

Although the critics have been mostly praising Justin's performance, we wanna know what you think! Can Justin follow in his namesake Justin Timberlake's footsteps and crossover to serious tv and film roles or is this just beginner's luck?