This week on television, Nathan Fillion's Castle joins the CIA, to save America from an international conspiracy. And Ridley Scott explains just how Isaac Asimov changed the world, in Prophets of Science Fiction. Plus Ben Edlund writes a new Supernatural, and there's an especially heartbreaking Adventure Time.

The Walking Dead comes back this week, and the show's creators are promising the fast-paced action you've been craving. But that's not all television has in store for you — there's also the series premiere of The River, a unique horror series from the creator of Paranormal Activity. Find out why we thought The River's…

All your favorite TV shows are back this week — including a new Supernatural, in which Aunt Jenna from The Vampire Diaries is getting knocked up. And you might (or might not) be surprised to see who's the father. Also, a whole new pair of alternate selves meet up on Fringe, and Obi-Wan finds himself in strange company, …

In this week's installment of Saturday Morning Cartoons we see Mary Shelley's Frankenhole return for season two, My Little Pony: Friendship is Magic return to SMC due to popular demand, and we take a quick look at one of my favorite HBO cartoons. Minor spoilers ahead!

This week on television, Kiefer Sutherland returns to the network that gave him 24. Plus another new TV show debuts, in which video games invade the real world! And Chuck finally races to its conclusion after five years of spy craziness. Plus Brad Dourif is threatening to destroy Miami with a super-volcano!

This week on Saturday Morning Cartoons, we take a look at the new story arc on Clone Wars and the one-hundredth episode of Robot Chicken. Plus, we welcome Archer and Marvel Anime: Blade to the fold. Minor spoilers ahead!

J.J. Abrams brings you another mysterious island and a ton of sinister clues, with his new show Alcatraz. Plus there are two other new shows debuting tonight. Meanwhile, this week also sees the return of several of your favorite shows, including Adventure Time, Being Human and Archer. Plus take a tour of the Lego…

This week brings the most awaited episode in store for season four of Star Wars: The Clone Wars, a brief analysis of the Brony phenomenon along with a Bronified take on Watchmen, and the finale of Marvel Anime: X-Men! We've got a lot of ground to cover – minor spoilers ahead!

In this week's television, Fringe is back — and kicking its universe-spanning storylines into high gear. This week also sees the return of a few of our other favorite shows. Plus the premiere of two brand new shows (to Americans, anyway), including a brand new look at a classic Marvel character.

Most of your favorite TV shows are back this week, as the spring TV season cranks into action. Check out your first look at new episodes of Star Wars: The Clone Wars, Supernatural, Vampire Diaries, Once Upon a Time and several others. Plus our favorite nerdy musical icon is finally getting his own Behind The Music…