For some reason, all the trains were picking up passengers using the first door of the first train while the second sat empty. Here are some shots and a video I made of one such train:
(http://i781.photobucket.com/albums/yy94/Nabi9833/MTA%202010/MTA6853.jpg)
(http://i781.photobucket.com/albums/yy94/Nabi9833/MTA%202010/MTA6855.jpg)
(http://i781.photobucket.com/albums/yy94/Nabi9833/MTA%202010/MTA6854.jpg)
And the video which explains the above photo:
http://www.youtube.com/watch?v=tZBIB2a8kh0 (http://www.youtube.com/watch?v=tZBIB2a8kh0)