I've got a few on my computer. The Undisputed Truth is pretty good, and I liked the Beyond the Glory for both Hopkins and Jones Jr.

The HBO Real Sports - Boxing Deaths documentary was good, but I found the part about Vernon Forrest's death particularly sad. I've got Unforgivable Blackness on there too but I've never gotten around to watching it because it's about 4 hours long and I've never had the time.

I've got a good one about Don King too, it's done by Jack Newfield. I'm not sure what the official title of it is, when I downloaded it it was called "Don King: Unauthorised." It's only about 40 minutes, but it's a good watch.