One of the most talked-about documentaries at last year's Sundance Film Festival was "Bigger, Stronger, Faster*," Christopher Bell's illuminating look at steroid use in professional sports - a topic close to home for Bell, a former steroid user whose brothers also bulked up on the stuff.

Now comes news that Bell's brother Michael, a k a "Mad Dog," has died at the age of 37.

The movie profiled Michael's attempts to break into the world of professional wrestling - for which, he believed, he needed to use steroids to build muscle. His failures in wrestling, the movie shows, led to years of drug and alcohol abuse.