WalMart is back to saying "Merry Christmas" this holiday season. Bill O'Reilly approves -- and disagrees when his in-studio guest argues that it doesn't matter what Wal-Mart does: "They're WalMart short of shooting puppies in their parking lot on national TV, people are gonna continue to go to WalMart." O'Reilly replies: "You'd be surprised." Looks like someone's catching the holiday spirit, the week before Thanksgiving. But Best Buy better prepare for some unhappy holidays.