Benedict Cumberbatch chats with ET’s Matt Cohen about ‘Doctor Strange in the Multiverse of Madness.’ The actor praises co-star Elizabeth Olsen and the evolution of her performance as Wanda, aka ‘The Scarlet Witch.’ Cumberbatch explains why the ‘Sorcerer Supreme’ continues to be a fulfilling role to play in the MCU. Plus, he teases his upcoming hosting duties on ‘Saturday Night Live.’ ‘Doctor Strange in the Multiverse of Madness’ hits theaters on May 6.