This season of Mad Men has brought more than an obsession with death, copious facial hair, and a merger — it's also been featuring a ton of recognizable guest stars. We were shocked but delighted to see Linda Cardellini (Freaks and Geeks forever!) in the season opener, and now it seems like each episode has another face we know. But just in case you're still trying to place some of Mad Men's recent guest stars, we've got the answers right here.
Mad Men: Why You Recognize These Recent Guest Stars