Oh yes. **** GRRREEEAAAAAAT book.
When you've finished it, start immediately on The Baroque Cycle (a trilogy, first book is "Quicksilver"). Sort of a prequel to Cryptonomicon, but that doesn't do it justice - it's even better. A sort of 17th Century alternative history, but... **** it, just read it.
Got all his books over xmas so I have a lot of reading to do.