More: Step by step into a black hole is a different presentation of the same computer simulation. More simulations that illustrate relativistic light deflection can be found in the contributions Four-dimensional ray tracing in a curved spacetime, The "Real" Einstein Ring, and Röntgenpulsare (in German). In the Interactive Black Hole Simulation you can "play" with light deflection by varying the position and the mass of the black hole. Teaching resources (in German) are available for "Reiseziel: Schwarzes Loch". They treat on the one hand light deflection, on the other hand the question of why an astronaut plunging towards the black hole at high speed experiences a view of her surroundings that is quite different from what her more cautious colleague sees from a fixed distance. For more examples of how fast moving observers see the world, see Through the city at nearly the speed of light and the references therein.