I don't know if this has been posted before, but it might be of some interest to a few. www.edwardjayepstein.com click on archives, then scroll to the bottom and click on questions, then Hollywood: stars and stunts. It explains the frequent use of stunt doubles. A few of these can also be applied to the use of voice dubbing. I believe the bad usage of doubles and dubbing, is in the directing and editing of the movie.
With all he has done in movies, music, charity, special appearances, etc, etc, in the last 2 years, he is NOT......I repeat NOT..... lazy.
Also check out the: Hollywood Insurance Question, on this site, www.edwardjayepstein.com
I agree that Seagal is very busy however that does not give him an excuse to not do his own stunts, especially when it involves the very martial arts that he built his career on. Having to be doubled for a brief hand to hand combat on the stairs in Black Dawn (2005) is frankly pathetic. And as I have pointed out before surely the stunt involving Seagal getting into the moving dump truck, which is actually him (you can see it on the special features) is far more dangerous than a simple throw or hand blcok which he now seems incapable of doing.