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“THE BIG BANG THEORY,” 8:30 p.m., KCNC-Channel 4 Thank goodness this show is now achieving the popularity it deserves. Tonight, Sheldon tries to help Penny understand Leonard’s work.
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“Find My Family,” 8 p.m., KMGH-Channel 7 A weepy, manipulative reality show that’s a throwback to the most maudlin examples from early TV, like “Queen for a Day.” In this one, people search for their biological parents and reunite on camera.
Joanne Ostrow
