A bit of advice I got ages back: Never compare your project to another project. The minute you say "Well my book(show) is like <other popular book/show>", you've already biased them to think you're ripping off someone else. You should be able to sell your work its merits, not by comparing it to other works.
Plus, how do you know they've seen Farscape or Lost In Space. How you know they've even seen Star Trek for that matter.