Mad Men recap: 'The Forecast'

After last week's meandering digression, this week's "The Forecast" feels like a reward for longtime Mad Men fans, packed with references to stories and episodes past. It features the welcome return of characters both beloved (Sally Draper) and loathsome (Lou Avery) -- as well as the triumphant and unexpected comeback of creepy old Glen Bishop (Marten Holden Weiner), having one last awkward encounter with Betty before leaving for Vietnam. Glen has always been a polarizing character among Mad Men...