3D animation of how a baby gets from the uterus to the world. It makes me clutch my ladyparts in fear. Not just because of the ..stretching… (though there is that) but because the music, Bach’s Cello Suite No. 1, is forever associated with Master and Commander for me. Childbirth and early 19th century British naval warfare, though perhaps equally un-fun, are NOT meant to go together.
The same medical animation artists also have a supercool video of the antibody immune response.