Alongside Milan Kundera, this guy is probably my favourite writer ever.
I find the juxtaposition of the ordinary and the downright bizarre in his writing style fascinating. There really aren't many people who could tackle the kind of oddness that he does and still resonate in a very human way.
I think Kafka On The Shore is probably my favourite of his, closely followed by The Wind-Up Bird Chronicle. Like many other people, Norwegian Wood was the first book of his I read and it is definately a good, gentle introduction to his work for anyone that hasn't read him before.