I loved Snow Crash and pressed it upon all of my friends, some of whom are still speaking to me. Cryptomonicon so much failed to interest me that I'm not even sure I've spelled it right, much less tried to read it. One of the friends I infected with Snow Crash, however, is a Serious cryptographyy geek, and loves all things computational. Cryptowhatsis is his Perfect Book -- and he was kind enough not to insist that I read it *g*