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Ah, Labor Day weekend. A time when most will celebrate the last days of summer by going outside and enjoying the fresh air. Some of us, most probably many reading this right now, will celebrate a long weekend and the opportunity to work on our TV tan.

There are marathons to suit just about everybody, whether you love Charlie Sheen, smart new dramas, evil-looking fish, or just want to kill your husband. Plenty of shows will frequent network schedules, like 'Law & Order' and 'SpongeBob SquarePants,' but here are some multi-hour blocks for which to plan.

(All times noted are Eastern Time.)

'30 Rock'
(9:30PM, NBC)
Despite her rather disastrous attempt to be approved for adoption, Liz Lemon's dream of motherhood is still alive.

In tonight's new episode, Jenna thinks it's that desire to have a child that's driving Liz's attraction to her new guy (guest star Peter Dinklage).

Meanwhile, in this guest star-heavy installment, Jack tries to help Tracy and his wife (guest Sherri Shepherd) seal the deal on a 'post-nuptial' agreement, while delving into a relationship of his own with Elisa (guest Salma Hayek), the woman who's been hired to take care of his prickly mom.