We've seen Mare Trevathan, one of the region's best actresses, far too little in the past few years, but her presence in what was essentially a cameo role galvanized Aphrodisiac, a play about a congressman and his mistress. Trevathan played Monica Lewinsky, and it was a tribute to her talent and conviction that the performance didn't evoke a thousand snickering late-night jokes. Blinking continuously, her Lewinsky was dopey but also somehow deep -- or at least full of emotion. When she spoke of her feelings for Bill Clinton and described how she wept on his chest after he'd refused to give himself fully by coming in her mouth -- because his attention was focused on his chair in the Oval Office -- we finally understood the tightness and intricacy of the sex-power knot.