They are calling it the Amal Effect because, following George Clooneys marriage to human rights barrister Amal Alamuddin, it seems that what a bachelor film star of a certain age needs most is a consort with a supernova combination of beauty, brains, and serious professional achievement. The latest star to embrace the phenomenon is Brad Pitt probably the most eligible bachelor in Hollywood since his split from Angelina Jolie and, incidentally, a long-time pal of Clooneys.In Professor Neri Oxman he has found a dazzling supernova of his own, and reportedly thinks she is the sexiest thing he ever laid...