Edward Jay Epstein has written a compelling piece for Slate which explains why showing nudity in movies these days can spell financial disaster for studios. He gives many reasons for this, such as the box office failure of the NC-17 rated Showgirls, but the most interesting is what Epstein describes as  the "Wal-Mart consideration." Studios rake in mega-cash through home video sales, and a majority of those come from Wal-Mart, which is strict about the movies it makes available, not wanting to sell anything offensive or inappropriate. This has many worried that Wal-Mart's clout far exceeds what it should.