Sci-fi shows come and go, but certain series surprisingly hold up over time, like Doctor Who, The X-Files, and Star Trek: The Next Generation.

The 1980s had some great TV shows that can be considered underrated today, from 'Wings' to 'thirtysomething' and 'Sisters.' ...

A Knight of the Seven Kingdoms expanded the Game of Thrones franchise with its first season, filled with great episodes.

Find out which sci-fi shows are the best for rewatches based on their compelling narratives and character development, from Doctor Who to Dark.

Don't try to call yourself a real JJK fan if you haven't watched these perfect episodes.

The latest of these is A Knight of the Seven Kingdoms, which has been trolling fans and subverting their expectations thanks to its irreverent tone and scatological humor. The penultimate episode ...

The season one finale of the 'Game of Thrones' spin-off sent its battered characters off into the sunset with many, many eyeballs watching.

A Knight of the Seven Kingdoms' first six episodes get the show off to a strong start, but the best will go down in Game of Thrones history.

With picks across nearly 1,000 episodes, there is so much Star Trek to watch — and watch again. Here are our top 10 favorite rewatchable Star Trek episodes.

HBO's A Knight of the Seven Kingdoms gave us some of the best and worst episodes from the fascinating world of Westeros!