A: Heroes (2006-2010).
The show's creator, Tim Kring, is developing a new series called Unknown 9, about an occult conspiracy, and he spoke to Inverse about the inspirations behind Heroes at the NY Comic Con.
“Then I saw my friend Charlie Kaufman’s film that he wrote, Eternal Sunshine of the Spotless Mind,” Kring continues. “His daughter and my son were in school together. I was really influenced by that movie.”
Kring explained how Eternal Sunshine of the Spotless Mind (2004) took two typical people and thrust them into extraordinary circumstances with a bizarre sci-fi twist about deliberately deleted memories.
[...]
“The idea of these hyper-normal characters, the kind of people you’d see walking on the street and never look twice at, they’re not just anonymous but hyper-anonymous,” Kring says. “The idea that extraordinary things could happen in their lives. I hadn’t seen that on television yet.” (Source)
The other two inspirations he mentions are a specific scene in his earlier series, Crossing Jordan, and the film Magnolia.