COMEDY. For its seventh and final season, expect "30 Rock" to feature Liz and Criss's baby-making plans (in truly awkward, nonsexy, Liz Lemon fashion), Jack's rebound post-divorce (with super hot women, natch), and Jenna's wedding (though in true celebrity form, when it will take place is anyone's guess).
Season premiere, 8 p.m., NBC
REALITY. The crew, now pregnant (Snookie) and post-rehab (The Situation), heads to the shore house for one final season of GTL.
Season premiere, 10 p.m., MTV
"Person of Interest"
DRAMA. Margo Martindale — an Emmy-winner for her turn on "Justified" — guest stars as a librarian who helps Reese and Carter attempt to track down the hacker who is holding Finch captive.
9 p.m., NBC
REALITY. One final round of performances, one winner receives the recording contract with Atlantic Records tonight.
Season finale, 8 p.m., The CW