It's summer movie time, which means big stars, big thrills and big box office blockbusters - at least the studios hope so. This time every year, we invite local film critics Matt Brunson and Sean O'Connell to talk about the summer's biggest movies - which ones to catch and which ones to avoid. Whether you're looking for superheroes in Iron Man 3 and Man of Steel, fast cars in Fast & Furious or some throwback SciFi in Star Trek, we'll cover them all. And you can't talk blockbusters without talking about those larger-than-life action sequences - so we've invited the visual effects supervisor for Iron Man 3 to explain how these effects work and the history of special effects in film, when Charlotte Talks.