An excellent article about great casting feats was posted four years ago (1.14.20) on passionweiss,com. The title was “Creating and Awarding the Last 20 Years of ‘Best Casting Director’ Oscars”, and the author was Abe Beame (no relation to the New York City mayor of the mid ’70s).
Beame says one of the best-ever jobs of casting was Gail Levin‘s casting of Almost Famous. Levin is a Cameron Crowe homie from way back (We Bought a Zoo, Elizabethtown, Mean Girls, Vanilla Sky, Jerry Maguire, Empire Records, What’s Eating Gilbert Grape).