The Festival of Insignificance is the 86 year old Milan Kundera's first novel in around 15 years. In it he revisits some of the themes of his earlier novels - jokes in totalitarian states, Stalin, lightness, existence - and, in a way, summarises them in a novel barely over 100 pages in length. Strangely. His characters meet in a series of tableaus, have conversations, but don't really go anywhere. There is no plot. The author occasionally addresses the reader. I really enjoyed this book. At times, it is truly profound, at times banal - one of the characters is obsessed with girls exposed navels, and ponders what it would mean if they were to represent a new centre of female seductive power. Then he moves on to ponder angels, who, he believes, would not have navels because they weren't born.
If you've read Kundera before, this is worth reading, but it's probably not a good novel to start off with. I'd recommend you start with 'The Unbearable Lightness of Being' (1984)