I'm not a fan, but I'm very curious about the cultural fascination with zombies.
There had been zombie movies here and there since Night of the Living Dead in 1968, but none of them got anywhere near the cultural traction as Dawn of the Dead in 2004. The spoof, Shaun of the Dead was released in the same year, followed by All Souls Day (2005) Automatic Transfusion (2006), American Zombie (2007) and I Am Legend (2007).
In 2008, there was a popular FPS video game entitled Left for Dead, which was remade just a year later into the sequel Left for Dead 2, with charactes loosely based on the movie Dawn of the Dead. L4D2 was even advertized on billboards, which is fairly unusual for a video game.
A year later the series, The Walking Dead made its debut. There was a flood of zombie movies from that point including Beverly Lane (2010), Bled White (2011) The Battery (2012), Abraham Lincoln vs. Zombies (2012) and World War Z (2013) just to name a few.
Zombies are everywhere in popculture now. American ammunition manufacturer, Hornady has even released 'Zombie Max', which were simply high performance hollow point pistol cartriges repackaged with a zombie theme.