We take a detour to Pittsburgh this week to talk about the making of “Jack Reacher” with writer/director Christopher McQuarrie. This week McQ tells us how he got involved in the production of “Jack Reacher,” reveals how they chose “One Shot” as the novel to adapt and exposes (literally!) the downside of fan service. He also discusses writing “The Wolverine” for Darren Aronofsky and why most franchise movies just don’t work.