It looks like Walmart is taking on Netflix now in its continued quest for world domination. The retailer acquired VUDU, an online movie-watching service that sounds very similar to the Internet-based viewing service that Netflix offers its customers.The transaction will supposedly make up for a lack of DVD sales from which Walmart is suffering.It seems like Netflix is the leader in this category right now and never really faced a whole lot of competition from Blockbuster. Can you see Walmart give it some formidable competition or is this a category that the largest retailer in the world will have trouble cracking?We have trouble picturing consumers logging on to Walmart's Web site to watch the latest Johnny Depp film, but maybe stranger things have happened.ALSO: Abercrombie & Fitch Finally Ready To Try Discounting