Interesting. I've loved most of Stephenson's books and Cryptonomicon easily holds the title of most re-read book in my collection.

Seveneves, on the other hand, I absolutely loathed in basically every regard. My loathing for it makes it memorable enough to be my most hated book (there are plenty of books out there that are 'worse', but are also unmemorable -- Seveneves is viscerally memorable)