NBC (7-8 p.m. ET)
In this special, Mariette Hartley gets the best out of precocious overachievers, who display their smarts in spelling bees, dance recitals and sessions with child specialist Dr. Lee Salk. In a bit of network self-promo, Hartley visits twins Sidney and Lindsay Greenbush, who alternate as Carrie Ingalls on NBC's Little House on the Prairie.
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