Sesmar's making me want to try out Gentoo - I use Mandriva and usually get things running (sooner or later).
I have most the emulators running - one great emulator is called "Mednafen" if you can get that compiled, it runs things like TX16, NES, Gameboy, etc.
http://mednafen.sourceforge.net/
here's some places I use when I search for RPMS;
http://dir.filewatcher.com/packages-directory.html
http://rpm.pbone.net/