Sync only unwatched TV show: bad idea

I found that, at least for me, setting iTune to sync only unwatched TV show to my iPod Touch is such a bad idea. The problem is that to me, the category "TV Show" doesn't just store TV Show, but also reference video for my dance practice. I watch those dance instruction video and ballet terminology video again and again. So I find it better to maintain the video by myself. After all, I always easily delete a video on my iPod Touch if I want to.