After a second viewing, I noticed how much this film echoes Orson Welles’s famous "War of the Worlds" radio production from 1939. Using only audio, he managed to generate an atmosphere of genuine panic; listeners unaware that it was a fictional drama reportedly fled their homes, believing Martians had invaded Grovers Mill, New Jersey! “Pontypool” unfolds almost entirely within a small radio station in Pontypool, Ontario, Canada. What begins as a typical day gradually transforms into something remarkable, conveyed largely through call-ins from people witnessing events, a weather reporter’s view of the sky, and ultimately, the town's doctor who proposes an outlandish but strangely convincing explanation for what is happening. Director Bruce McDonald and writer Tony Burgess skillfully establish an atmosphere of frustration, disbelief, and panic all within the limitations of a single location. I never felt restricted by not seeing what was occurring outside. Similar to Welles’s "War of the Worlds," the unfolding crisis is presented through audio reports alongside the unexpected arrival of the doctor. While there's a scene that might shock and sadden viewers who enjoy gore, this film isn’t primarily aimed at that audience—unless they possess vivid imaginations and can accept “eyewitness” descriptions of violence. What’s also refreshing about the story is that the force impacting the outside world isn’t a virus or a zombie-like resurrection. Instead, it's something... as the doctor explains, preposterous yet undeniably believable. Casting Stephen McHattie as the DJ past his prime but not willing to fade away was an inspired choice. He embodies Grant Mazzy in a way I can’t imagine anyone else achieving so well. He blends cynicism with vulnerability, anger, humor, and just the right measure of insanity as chaos surrounds him. It's worth noting that, according to trivia on IMDB, the writer acknowledges being significantly influenced by Welles’s legendary radio drama when developing the initial book, then a radio adaptation, and ultimately the film itself. This influence is evident, as mentioned, and it shines through beautifully.

Source on TMDB