2010-present, 6 Seasons
Mentioned in Season 1, Episode 2 / 17, and in its own episode here.

Zombie-based drama following a group of survivors led by former Sheriff Deputy Rick Grimes, played by This Life's Andrew Lincoln (although given the profile of this show, he's probably now best known as The Walking Dead's Andrew Lincoln).

This record-breakingly popular show is loved by Jamie although he sometimes finds it a bit morbid.  Hywel has started at the beginning and recorded this show all about whether to persevere in October 2015. But did we mention how much Chuck he's watched?