EDIT: Yep, it was on The Tonight Show a week ago. You can see the edit by looking at the fade on the right flag as soon as Obama starts walking. http://www.youtube.com/watch?v=DCLY7lrOo2U
You know I've never understood why reporters always try to ask people questions when they're obviously leaving. Like they're going to hear it and be like "oh shit what? let me come back"