you probably just need a blu-ray player , however the ps3 has advantages that some don't especially in the price range .
it has easy firmware updates and is future proof for upcoming things like 3-D movies plus it can connect online wired or wirelessly for accessing bd-live online blu-ray features like screenings with the director and actors on some movies
it has one of the best blu-ray drives around and the available bluetooth remote has lots of features
just for that alone it's a good buy ' and if you decide to you can play games , surf the web , store music , movies and photos on the hard drive and access netflix on demand videos on a ps3 plus rent or buy movies and tv shows directly to the ps3 from the playstation store