Here's the thing:
My very good friend and certified "madman" Bob Forward has a site dedicated to downloadable stock pyro footage called Detonation Films.

I've used Bobs stuff in the past, I stumbled there recently and saw that not only has Bob upgraded to HD for a lot of his effects, he has lots more than I ever saw before!
There's explosions, explosions, bullet hits and explosions. There's blood, sweat, and tears. There's debris, theres smoke, there's fire.... there's perdy much anything you'd need, and all available for electronic purchase (w. a lot of cool freebies too)!
And there's also Kabumei, and Bob's other films....
Yes, this man is insane; he lives to blow stuff up, but he is sane enough to keep a camera nearby every time he does it...
So.... I just thought I'd throw Bob a plug, "just coz". And no, he ain't paying me for saying this (although that's an idea... ;) )
/Z