Blowing Smoke is the penultimate episode of what has been a outstanding fourth season of Mad Men. Don fires the shot heard round New York by blowing off big tobacco. Pete's mind is blown when he has to pony up 50 big ones to keep the agency afloat. And an old friend decides to skip the blow and head straight to smack as Midge learns that heroin is a full time job. With the finale at our doorstep, a great big thanks to all the superb participation from our listeners on facebook, twitter, email, the website and even the occasional voicemail. You've help make this so fun.