Norwegian Wood is touted as being Murakami's most mainstream novel; it is the book that won him wide acclaim in Japan and led to his leaving the country for a number of years to get out of the limelight. It is also, to my mind, his most atypical.
I enjoyed the book when I read it, even though it is a bit grim in places, but I liked the picture of Japanese life that it painted. I found the film version of it a let down, though, because it was just so bleak (what humour there was in the book was completely missing on screen).
I've read a number of his novels, and I would suggest you try either After the Quake, which is a collection of short stories that take place around and in the aftermath of the Kobe Earthquake, or After Dark, which is the first of his novels I read and I still mean to re-read at some point.
By the way Colorless Tsukuru Tazaki and His Years of Pilgrimage is £3.79 on Kindle at the moment, if anyone is interested!