i've still got my genesis / mega drive emulators , but i only got them so i can find out what games to go retrohunting for.
my megadrive v1 and megacd v1 (genesis v1 and segacd v1) has pride of place ontop of my centre speaker between my screens. i love it

its the shit.
i play sonic cd every night as well as streets of rage and golden axe on my mega cd
i love side scrollers.
unfortunately it'll be moved out of the way once i get my 360. but i think thats a good competitor.