Insert disc 6 of the set and from the Main Menu select 'Special Features.' 
Once there, select the 'Universe of Babylon 5.' In the following menu, 
select 'Data Files' and in the sub menu that follows, highlight the menu 
entry that reads 'Battle of the Line.' Now, press the RIGHT arrow key on 
your remote control and the 5 logo will appear on the side of the screen. 
Press ENTER and you will get to see a generic Babylon 5 promo clip.