The Orwell show was quite entertaining but ultimately I cannot see the point of turning the novella into a play. As for Ishiguro, he mainly deals with questions related to memory and history, specifically on how to come to terms with a traumatic past. One may criticise that Ishiguro's palette is too narrow, but what he does within the limited scope is very sophisticated. If you only have time to read one of his books, try The Remains of the Day. If you have more time at your disposal, begin with A Pale Views of Hills (1982) and An Artist of the Floating World (1986) before you read The Remains of the Day (1989), then move on to When We Were Orphans (2000).