30 Rock finally comes back next Thursday, and even though my TV-watching schedule is packed tight, I can't wait for another season of Liz Lemon, Jack Donaghy, Tracy, and Kenneth. The video gives away some season four plot details: Jack tells Liz she has to conduct a talent search to add some more cast members to TGS, which of course shakes up stars Jenna and Tracy. It's a mix of upcoming footage and behind-the-scenes interviews, so watch and get excited for the premiere (and the Brian Williams cameo!).