WWW.ACEPIXS.COM . . . . . ....May 9 2011, New York City....Actress Keira Knightley made an appearance at the Jon Stewart show on May 9 2011 in New York City......Please byline: PHILIP VAUGHAN - ACE PICTURES.... *** ***..Ace Pictures, Inc: ..Philip Vaughan (212) 243-8787 or (646) 679 0430..e-mail: info@acepixs.com..web: http://www.acepixs.com