Michael Emerson in the pilot episode of "Person of Interest"
According to the What About ME? blog, Michael Emerson will be on Late Night With David Letterman this Tuesday, September 6, 2011.
I assume he is going to talk about his new show, Person of Interest, which starts Thursday, September 22, 2011, at 9:00 p.m.
See the official site for the show for a lot more info.
