From the YouTube description:
This computer animation, created using new software called Arepo, simulates 9 billion years of cosmic history. Arepo can accurately follow the birth and evolution of thousands of galaxies over billions of years. Arepo generates the full variety of galaxies seen locally, including majestic spirals like the Milky Way and Andromeda.
Huh. Watching the universe being born is a pretty good wake-up call for the week. I'd say it's almost as impressive as a good cup of coffee... almost. (Via The Mary Sue)