One of my stylistic tics is of course. This, for me, implies a certain intellectual attitude of: "Yes, sure I already know that, but let me tell you something else that is not self-evident." It is a metadiscursive sign of a certain kind of argument that I am favoring. There is nothing wrong, of course, with this style of arguing, but it is helpful to be aware of it, that that is what I am doing.
You can also smuggle in a question-begging assumption with an of course or needless to say.