If you don't want captions, below is the movie of the formation of the Eris disk galaxy:
Another video without captions, in high resolution (650 MB file):
from the paper:
Guedes, J.; Callegari, S.; Madau, P.; Mayer, L.
Forming Realistic Late-Type Spirals in a LCDM Universe: The Eris Simulation
submitted to the Astrophysical Journal.
More info on prof. Mayer's page and Javiera Guedes's website.