Insomnia

There are many people for whom the book “Insomnia” will serve as a cure for the titular condition. It's an 800 page book that takes about 150 pages to start making sense – the first quarter of the book is all strange goings-on with no exposition.
Our hero, an old man with a dying wife, begins loosing sleep and (he thinks) hallucinating. He can see auras around people, fields of light that change according to their mood and health and terminate in a long “balloon-string,” their soul. And if that's not strange enough, he starts seeing three little bald men dressed as surgeons, who go around snipping people's strings.
It's all very psychedelic and intriguing, but I can see someone giving up on the book before it really gets rolling. Which would be a shame, because the plot kicks in around page 150 and it's a heck of a ride, all the more enjoyable if you don't know what's coming.
Suffice to say that this is the multiverse-hopping, cosmic guru King of The Stand and It, not the bare-bones King of The Girl Who Loved Tom Gordon and Running Man (I like ‘em both, if you were wondering). Insomnia is actually a better read than both The Stand and It, because it is more closely tied into the world as we know it. Most importantly, the characters are complex and believable, truly people worth knowing.
So if you've got the attention span and the physical strength to lift this book, definitely pick it up.