Two of them (maybe, I haven't tried them). One of those you're referring to is just a blatant case of false advertising (Netsub IT Services one), because it's

Two of them (maybe, I haven't tried them). One of those you're referring to is just a blatant case of false advertising (Netsub IT Services one), because it's just showing the trailers and info about the movies, and the Scooby Doo one is just playing sounds from Scooby Doo, not letting you watch Scooby Doo. And just because such apps exist, doesn't mean that every developer needs to validate every input to make sure that it doesn't infringe on someone's copyright. It just means that Google needs to do a better job at detecting such apps.