@ioi,
There is a problem with the videos however in a stock FF3 environment (it does work properly in IE7 though). Once you click on the button and close the window, you can not open the video selection screen again until you refresh the page.
EDIT: also, is there some way to add this button to other games? do you have to do it manually, or does it do some search and then place the button if it can find movies? Can we add movies to the database that this is searching from? It just seems like there aren't a lot of movies to watch, but there are obviously more that exsist.