The Bourne Identity is written by Tony GilroyTony Gilroy wrote Michael Clayton. Michael Clayton is starring Tom WilkinsonMichael Clayton is written by Tony Gilroy
[Human]: What can you tell me about The Bourne Identity. [Assistant]: It's a great movie, it was written by Tony Gilroy and Robert Ludlum starring Matt Damon and Nicky Naude, have you seen the movie? [Human]: Yes, though didnt he write Michael Clayton as well? 
Yes Tony Gilroy also wrote Michael Clayton as well, did you know George Clooney is in that movie?