Coen movies are known for their special humor and this is no exception. The story is great and they way it is told is even better. The plot twists come one after another and you never really know what is going on. This could become problematic in some movies, but in this one it works great. This is mostly thanks to the great performances by the cast, the funny way the story is told and the direction of the Coen brothers.
That being said it's not all fun and games. The main guy, known as Lebowski or "the Dude" can be annoying to watch and personally he was as much annoying as he was funny. The same goes for his best buddy Walter. They have some golden moments of course, but as mention it can become to much at times. This is probably the main flaw of movie. I am sure others will disagree with me on this point but it is my opinion. It's worth the watch though so don't be scared away. 7/10