Two black holes colliding and merging gif
Adam Rifkin stashed this in The Universe
Massive Black Hole Duo Collision gif: http://i.imgur.com/m8tzAO9.gifv
ZadocPaet: "This is a result from ray tracing in a BH-BH merger simulation. The researchers who are responsible for this work did an AMA a few weeks ago. See that link for high quality movies, a link to the paper, and explanations."