Thanks Dale B and Phoul!

Phoul - a few more questions about your technique if you don't mind sharing...

How big was the model used in the church looking fly through? Do you find that having things larger than normal makes animating easier. I have not tried many sweeping shots but wonder if it's hard to "populate" an area enough that it looks real as the camera pans through.

Also, I was wondering if you use Vue for your explosions or if you use a program like After Effects to do this.