Fred Armisen worked up an imitation of Ira and put it into a sketch on Saturday Night Live a couple years ago. But when they rehearsed it with an audience, there was not a roar of recognition; it seemed like Ira might not be famous enough to be mocked on network TV. So today Armisen finally gets a go as Ira’s doppelgänger in our studios by co-hosting the entire show. Fred's show Portlandia returns for its fourth season in February. (4 ½ minutes)