I use Nesticle for NES emulation, ZSNES and SNes9x for SNES, and then I also have one for the original Game Boy, but I dont know what it is called. I am perfectly fine with emulators for old systems.
I also still have a good old NES sitting around in my house. I love it. It is the favorite of all my consoles. Right now I am currently playing a fun filled adventure of Dragon Warrior. (originally type in the wrong title ) [/edit]