Once told by a casting agent that she was too tall to play anything but lesbians and aliens, Allison Janney has clearly had the last laugh. Combined with stage-honed talent, her regal stature has served her well in films like American Beauty and Primary Colors and in her role as C.J. Cregg on NBC's The West Wing, which has earned her four Emmys. This season, C.J. was promoted from press secretary to chief of staff, making her the most powerful woman in the White House.