In the spirit of Salt-n-Pepa, let's talk about sex—specifically, Showtime's hour-long drama, Masters of Sex, the best new TV show of fall 2013. Created by Michelle Ashford, Masters of Sex is about the groundbreaking work of William Masters and Victoria Johnson, pioneering sex researchers operating out of St. Louis in the late 1950s. Which is to say its about the complicated politics of pleasure, and the way relationships unfold or unravel. It's about what makes life exciting.

The show opens in 1956, at Washington University. Dr. William Masters, played by Michael Sheen, has hit a wall with his research into fertility. He realizes the next step is to explore the way a woman's orgasm might affect conception, and he needs a partner to help. Enter Lizzy Caplan's Victoria Johnson, a progressive single mother (can there be any other kind?) unafraid to do like Salt-n-Pepa and dish about the realities of the bedroom.

We've only had the chance to watch the first two episodes of Masters of Sex, but they're both packed with smart ideas and loads of promise. See for yourself with our five reasons to watch.

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