"Once a week" is a weekly challenge between my friend and colleague Joaquín Aldeguer and me, doing stuff just for fun and trying different things (or not) on our usual work. From left to right: Alaska and Mario Vaquerizo (1st, sketch by Joaquín and final by me; 2nd, the opposite), Bill Cosby, Michelle Pfeiffer, Rafael Hernando, María Dolores de Cospedal, Elton John, Cher, Pedro Almodóvar, Rossy de Palma, Johnny Depp, Scarlett Johansson, Pablo Casado and Soraya Sáenz de Santamaría.