Now that I've watched TONS of ridiculous old movies, I'm not quite as fond of Pillow Talk's absurdity as I originally was, but it's still pretty classic.
And - like Sex and the Single Girl - it's one of the major plot sources for the movie Down with Love.
Starring Doris Day, Rock Hudson and Tony Randall.
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"Womanizing songwriter Brad Allen (Rock Hudson) spends hours on the phone wooing his many women. Problem is, he shares a party line with prim interior decorator Jan Morrow (Doris Day), who's miffed because she can't get any calls. Then Brad gets a gander at Jan -- and it's lust at first sight. Realizing he's a goner if Jan learns his true identity, Brad concocts a Texas persona to seduce her. When the truth comes out, there's hell to pay."
See all the previous movie posts here.