Yeah, it's crazy. Language classes are probably the most universally hated in any high school. But if you tell the students, "Come in to the class room and we'll talk about anything you want all class" it can be a different experience. The biggest thing is that students get frustrated when they can't express themselves or if they can't understand. The key is to ensure that all the students understand 100% of what you are saying all the time. This is quite tricky to achieve, but not impossible.