You read Roald Dahl? Cool. He's like the only recent Norwegian author who is popular abroad.
I also like Tolkien a bit, but he's very hard to read. It almost feels like reading a history book. The Hobbit is quite easy to read, but LotR and especially Silmarillion are very hard to read at times. Tolkien has put very much effort into forming an accurate alternate universe, but for someone without his brain capacity it can be a bit overwhelming.
Anyways, I haven't read very much lately, unfortunately. Most of the books I've read the last year are books belonging to my university curriculum. I've read some fiction as well, mainly crime fiction by Norwegian/Swedish authors. I think they're the best in the world at what they do. For some reason, scandinavia has a really large collection of excellent crime authors.