<p>"Darling, a sponge fits in anywhere."</p>
<p>So went the exchange between Barbra Streisand and the late great Kay Medford in "Funny Girl."</p>
<p>BARBRA STREISAND'S admiration for Bill Clinton hasn't wavered, despite the fact that he is no longer president. Streisand was like a giddy school girl at a chi-chi dinner for California's Democratic Sen. Barbara Boxer, last week in L.A. (At the Pacific Palisades home of venture capitalist David Fisher.) Clinton, still wildly popular with Democrats, attended, and Barbra was starry-eyed, protective and affectionate with him.</p>