Add Yahoo as a preferred source to see more of our stories on Google. Courteney Cox as Monia Geller, lounging on the couch in Central Perk, on Friends. - NBC Courteney Cox is a household name thanks ...

Sci-fi is an enduring genre on the small screen, even if the budgets couldn't always match the big screen, and these are the best sci-fi shows ever.

If you've watched all the science fiction series on the streaming services you subscribe to, here are some great sci-fi shows ...