 EASTER EGG: On the Region 1 and Region 2 DVDs, disc 2, in the "Outer  Planets" menu (the first menu shown), select "Communicate", and go  left. You will see a large Earth. Press Select to see a segment  called "The Full Version of The Opening Titles". This version is  actually the same length as the regular version, but the "O tunnel"  the astronaut travels through is replaced by the opening "vortex"  from 1970s