Snow Crash is way uneven. I believe the first chapter was actually storyboarded, to be a comic book. So it makes an amazing hook, but the rest of the book Needs An Editor.
It reads as almost a picaresque satire, like Candide. It's full of good jokes like "I'm sure he'll listen to Reason" and "the most important technology man has created is the three ring binder", and uses the adventure structure to make commentary about his particular dystopia.
Buuuuut, its also laced with random boring history lessons on ancient mesopotamia. There are just too many locations, characters and digressions to move the plot up coherently and keep in your head, and the flipping between protagonists is hard to follow and remember. Wikipedia's plot summary doesn't even mention several key points, like a nuclear fission powered guard dog nearly going critical. Some the jokes are dated references to the 1980's (Godfather's pizza, Moonies).
There is a good book in there, but wait for the miniseries in 2050.