Nicole Kidman as Virginia Woolf, Lucille Ball, and a Parisian showgirl. Christian Bale as a haunted machinist and a balding boxing trainer recovering from addiction. Andy Serkis as Gollum and Caesar. There has been a whole buffet of amazing on-screen transformations, aided by prosthetics, special effects, and sheer force of will. In this episode of Supercut, we discuss some of our favourites, and the power of watching a convincing transformation on the big (or little) screen.