Here's a look at tonight's sci-fi TV:
Chuck, 'Chuck Versus the Final Exam' – This season we've seen Chuck grow from wannabee sleuth to genuine super spy. Now our boy must pass one last test to prove his worth to the government. But Chuck is shocked to learn that his final spy school exam involves executing a Ring baddie.
The last few episodes have all been leading up to this moment. Will Chuck embrace the cold hard life of a real spy, or will he join the newly tamed Casey as a Buy More lifer? Find out tonight, Chuckleheads. (8 p.m. ET on NBC)
Head after the jump for a preview and more TV picks.