Well, I guess I enjoy every sort of SF. While I often watch movies and
series, there goes nothing over a good SF book. One of my favourite authors
is without doubt Isaac Asimov. I specially enjoyed his Foundation Series.

Another great author ist Peter David. He wrote some of the finest Star Trek
novels I ever read. "Imzadi" is my favourite novel written by him.

But back to screen entertainment. I really enjoy watching Star Trek and Outer
Limits. Also Babylon 5, Visitor and the X-Files are really good shows. Well,
there are many more :)