I have seen all the star trek tv series except enterprise but am going to before the year is out, and so far out of all the series episodes, I still think that City on the edge of forever from the original series is still #1 and joan collins was so beautiful in that episode.

I agree. "The City on the Edge of Forever" is my favorite episode, too.

It's a tough call, but my personal fave is "A Piece Of the Action."

A fun episode.

I think "The City on the Edge of Forever" remains the greatest Star Trek episode ever.