This paper looks at some of the different practical cyborgs that are realistically possible now. It firstly describes the technical basis for such cyborgs then discusses the results from experiments in terms of their meaning, possible applications and ethical implications. An attempt has been made to cover a wide variety of possibilities. Human implantation and the merger of biology and technology are important factors here. The article is not intended to be seen as the final word on these issues, but rather to give an initial overview. Most of the experiments described are drawn from the author’s personal experience over the last 15 years.