As a graduate research student, you often find yourself teaching subjects that, while in your area of expertise, are so conservative and outdated that you feel bad, and perhaps even dirty for teaching them. I have an (untested, or semi-tested) way of dealing with this.
Step 1: Read the reading material on the course carefully. How can you adapt it to your own research? Trust me, there will be a way. Pick a key word or a reference from the bibliography of one of the readings, and go nuts.
Step 2: Identify students who are really enthusiastic about your area of research, especially if it’s an area that is not really taught at undergraduate level at the university. Encourage them in their pursuit of this research. Suggest they adapt essay questions to the area. Make sure it’s a fairly obscure area, but not so obscure so as not to be known. Pick something trendy, like Felix Guattari. Undergraduates love to be trendy.
Step 3: This enthusiastic army of research students, both undergraduates and postgraduates need supervisors. What to do? No one at the university you teach at has expertise in that area. They had better hire someone to teach all these young upstarts. That person had better be you, oh you who has recently finished your postgraduate studies and are looking for work. Oh, and you have a wealth of teaching experience.
This is how you stealth teach. It’s a work in progress for me, but it’s also about making sure the students I’m teaching get access to more recent research that what they otherwise would. I feel like I have an obligation to my students, and to the future of my discipline. The serious side of this is that a lot of contemporary critical theory gets ignored and dismissed by lecturers that may mean well, but are comfortable in their very specific areas that are usually pretty outdated. They will never seek to change or innovate their courses. You have to do it for them. And make sure (promise me) that you’ll never become one of them.