I'm still working on the art for mine, and the voice for the lab tech (Sam Corsair, whom nobody knows yet) has to be redone by my brother.
The only thing I've changed is that instead of just showing the school exploding (it's a school; not sure if you got that) from an overhead angle, I'm gonna have Sam (the lab tech) being flung straight up at the camera, cackling maniacally (to match the original sound). It'll end with Sam basically eating the camera (as a fade to black of sorts).
I figure if I set the time aside I should have it relatively complete in a week. The explosions will take time... The first angle will basically show the explosion bursting out through all the school windows and blwing off the doors, then switch to an overhead angle where there's a shockwave and mushroom cap expanding to envelop the area (which will end up being covered by Sam in the foreground).