Elonka wrote:
] Note: I've been curious as to what other books beat DVC's
] sales records.

Nothing definitive on that point, but I did find a few data points:

* What to Expect When You're Expecting: 12.7 million in the USA; published in 30 languages worldwide.

* Robert Ludlum: 25 novels and more than 210 million copies worldwide.

* Da Vinci Code: 29 million in print worldwide.

In 1997, 2.1 billion books were sold in the US, including 758 million hardcover units.

According to Google Answers

http://answers.google.com/answers/threadview?id=14

most works of fiction can't compete with the likes of the Bible and Chairman Mao's Little Red Book. This page claims that "The Valley of the Dolls" is the bestselling fiction of all time. (This is affirmed by other sources, as well.) The count is not provided, but it is said that #2 is Gone With The Wind, with 28 million copies sold. This page also provides a list of books exceeding 10 million copies sold; one of them, The Godfather, has sold 20 million copies, according to a University of Virginia study.

Comparing 'Da Vinci Code' to the bestselling books of all time