Craig Schmall, the CIA employee who daily briefed the Vice-President and Lewis Libby, testified about notes he would write in the briefing book table of contents. On June 14, 2003, the same day he made a notation about Joe Wilson and Valerie Wilson, Schmall also wrote: "Tom Cruise & Penelope Cruz at office". He testified that their visit was to express concerns about the treatment of Scientologists in Germany.
Washington Post story is here.
New York Times story here.