I've been using Pimsleur too for the last 3 months, and I'm 5 lessons away from the end (tried to do one lesson a day). Listening to TV/radio/movies/people talking I constantly pick up words that I know, but in the end I never really understand anything, except for some simple sentences now and then. But at least it gives you a feel for the language, and the parts that I don't understand I can mostly parse into distinct words, so it's a start. Plus you learn the most common declensions/conjugations so when you study the grammar it seems less overwhelming. And of course it's great for learning pronunciation. So I think it's definitely a great way to start because it's so easy and gives you a good basis, but it's only a start.