With a stunning turn of events in last night&amp;#8217;s Mad Men finale, series creator Matthew Weiner finally addressed the elephant in the Sterling Cooper Draper Pryce lunch room: Megan&amp;#8217;s teeth. I don&amp;#8217;t want to come off as superficial, but you know it&amp;#8217;s been nagging at you the entire season. I kept my mouth shut when [...]