There is a story on the Miss Mouthy blog about credit card theft, and she thinks credit card thieves are using Netflix to test stolen credit card numbers:
Here’s my theory: Somehow someone got ahold of my credit card number. They place a small charge for Netflix to see if I notice. Hey, familiar company name, lots of people have accounts, who’s to know? Then they place a small charge for an unfamiliar company. Did I notice? Nope. Then comes a bit larger charge but still nothing huge. However, if they are able to pull this for months and months on thousands and thousands of people, they can probably make a tidy profit. On the cards we use all the time, these charges may have slipped by for years.
A number of the commenters on the story are reporting similar charges for Netflix, even people living in other countries.
It's always a good idea to check and confirm all of the charges on your credit cards.