Tonight's TV: It's A Wrap For 'Life Unexpected,' And 'Pioneers' Return Tonight on TV: the CW's Life Unexpected takes its final bows, while FX airs another episode of a critically acclaimed new show and hopes for better results than it got last week.

Tonight's TV: It's A Wrap For 'Life Unexpected,' And 'Pioneers' Return

Hey, that's Bob Newhart, guest-starring on tonight's NCIS. Sonja Flemming/CBS hide caption

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Sonja Flemming/CBS

Hey, that's Bob Newhart, guest-starring on tonight's NCIS.

Sonja Flemming/CBS

It's the two-hour series finale of the CW's Life Unexpected (8:00 p.m.), a show with a small but often very devoted fanbase.

PBS's Pioneers Of Television (8:00 p.m. many places, but check local listings) airs its Science Fiction installment tonight. You can watch a preview, in which Leonard Nimoy talks about playing a zombie.

Bob Newhart is guest-starring on tonight's NCIS (8:00 p.m., CBS). Just thought you'd want to know.

Diane Sawyer talks to Mark Kelly, the husband of wounded Rep. Gabrielle Giffords, on tonight's 20/20 (10:00 p.m., ABC).

Another episode of FX's Lights Out -- the first critically adored but tepidly rated show FX has put on the air since ... well, since Terriers -- airs tonight at 10:00 p.m. But it's on opposite, among other things, BET's The Game, which it rescued from A 2009 cancellation by the CW, to startlingly good ratings last week.

The second episode of Onion Sportsdome, which I reviewed last week, airs tonight on Comedy Central at 10:30 p.m. As I mentioned in that review, I like the second episode more than the first, so if you haven't checked it out -- or if you saw the first episode and thought it was so-so -- you might give it one more shot at impressing you.