Widely considered one of Disney's more underrated films, Treasure Planet is an adaptation of Robert Louis Stevenson's classic novel Treasure Island - but set in space, with robots and shape-shifters to boot. While it didn't do well on its initial release, its animation style had a special touch, setting hand-drawn 2D traditional animation atop 3D computer animation. 20 years on, we look back at this film and see if critics and audiences got it wrong at the time.