My cousins have an nes 2 (with original rectangle nes controllers for some reason), an n64, a gameboy, a ps2, a couple xbox 360s and a wii. I set up their wii to use emulation so they don't have to plug in the nes anymore. For the most part it isn't a problem (although the first time I used save states, one of them thought I was cheating :P), except for Duck Hunt, because fceugx for some reason doesn't like 1p-zapper 2p-controller. It assumes both ports use the same controller for some reason.
As for myself, I've been spending most of my gaming time plying free and open soruce games, like super tux, super tux kart, red eclipse, dungeon crawl stone soup, freedroid classic (not that I care for it that much :P), pingus, frozen bubble, minetest, battle for wesnoth, etc. I like the feeling of having complete control over my games without worrying about copyright. I run these games on Linux, naturally.