Good news for all planetariums. Just in time, the "Haus der Astronomie" (House of Astronomy) produced a short fulldome video on the importance of the 1919 solar eclipse to prove Einstein's theory of the General Relativity. The planetarium show "Checking up on Einstein" provides a brief (4' 10") introduction to light deflection in a gravitational field, the British 1919 eclipse expeditions and their test of the predictions of general relativity. The show is well-suited as an addition to live presentations such as "The Night Sky in July" or similar. And the best of it: it is free.
Kudos to Thomas Müller and Markus Pössel!