I really like Malazan Book of the Fallen. The first two books were just awesome. The plots were so tightly wound and the action was fast-paced. Things started getting spaced out after that, but I still liked the other books. It's getting to the point now though where there are so many characters and so many threads - he's starting to suffer from Robert Jordan disease.

Regardless, people should at least read Gardens of the Moon. It stands on its own as a great piece of writing.