'West Wing' stars go for a walk (and talk)

With the help of EveryBody Walk and Funny or Die, "West Wing" cast members Allison Janney, Dulé Hill, Joshua Malina, Melissa Fitzgerald, William Duffy and even President Josiah Bartlet himself, Martin Sheen, reprise their roles to go for a stroll -- one that might have some health benefits for the notorious walk-and-talkers.