Vincent Kartheiser Vincent Kartheiser

As Mad Men begins its seventh and final season, there's a certain amount of reflection in the air.

In the exclusive behind-the-scenes video below, Vincent Kartheiser looks back at the journey of his character Pete Campbell. "Pete has generally gone through what most men go through between 25 and 35: They become men," he says. 

Spring TV: Get scoop on your favorite returning shows

p>