I've just counted, I have 104 games installed, including ports (DoomX, Odamex, XDuke, XShadow , etc) and commercial games. This doesn't include emulators, of course, as they are in a different directory (I use Evo-X).
I *love* how the XBox 1 can play anything from hard drive, and I'm very grateful for the people who put so much time and effort into making it all possible. Without their skill, intelligence, and dedication, the XBox would still have so many great commercial games of course, but would still be far less brilliant as it is now, as there'd be no homebrew, no way to run things from the hard drive, and no game ports.
So many, many thanks to everyone concerned!