Although I'm a film buff, I was unaware of the existence this delightful,sophisticated comedy until I saw it recently on TV in Buenos Aires, of all places. Grant, Kerr and Simmons are splendid, as usual, and Mitchum is, well, Mitchum and that's good enough for me. The plot offers the conceit of Mitchum taking Kerr away from Grant, her fusty husband, because Mitch is hot and Grant's not, a rather daring concept for 1960. Grant, of course, has a trick or two up his sleeve and alls well that ends well. The witty dialogue and snappy direction (Stanley Donen) puts to shame the witless, charmless crap churned out by Hollywood hacks for the past 25