A quick test setup using Rayfire for 3DSMax. The shattering glass was simulated and rendered in slow motion anyway, then slowed down again in After Effects.
This scene only took about 3 or 4 minutes (on an Intel Core i7-860) to simulate using the Physx option in Rayfire (rather than Reactor). There's around 30,000 poly's and over 1000 objects in the scene. Using reactor that same simulation would probably take hours, even of a fast machine.
The original render output was 250 frames (10 seconds long) and took about 2 hours to render with Mental Ray. Then I slowed it down again and added some depth-of-field in After Effects.
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