Cosmos: A Spacetime Odyssey: An Experiment in Gravity
An experiment shows how space is warped by mass, and how black holes can lead to spacetime travel.
Yeah,but; you have to remind us that it is a 3 dimensional phenomena applicable to all masses being expressed in 2 dimensions by 1 object. While stated, the dimensional limitation needs repeating for those of us less memory blessed. And the mutuality of gravitational attraction is not mentioned. Still it is a nice intro into space/time distortion caused by mass.