I know I'm always mentioning him but for my money I reckon Jonathan Coe will at some point have his place in modern literature. I think of him as a less wordy modern day Charles Dickens - he uses humour, caricatures, and differing perspectives to recreate the social and political and human conditions of the latter part of the 20th century. In decades to come people will read his books and get a true flavour and picture of 'the past'.