When you try to view movie trailers in Front Row on any Front Row-equipped computer (such as iMac G5 (iSight), iMac (Early 2006), MacBook, MacBook Pro, etc.), you may see the alert "The movie trailer server is not responding" instead of the list of trailers.
If this happens, you need to update Front Row to version 1.2.2 or later. To do this, run Software Update and install any available updates. (If you want to find out what version of Front Row you are using, find Front Row in your computer's Applications folder, highlight it, and choose Get Info from the File menu. This, however, isn't necessary for the update process.)