Esteban Cuesta with a cool little demonstration of multi-radial shattering feature and animation of gravity field in pulldownit for Maya.

Multiradial shattering tutorial with Pulldownit in Maya from Esteban Cuesta on Vimeo.

Pulldownit! is a brand new dynamics solver for Maya which allows for the creation of fractures as well as massive rigid bodies simulations.
By using its technology digital artists are able to simulate fast and easily scenes made of thousands of objects and collapse buildings, bridges or any kind of brittle material.