Atari 2600 of course.
But since most people here are too young to give Atari some credit and only remember their later years, the results of the poll doesn't surprise me.
they certainly deserve credit but it shouldnt be hard to believe why people think NES had a more significant impact.
it revived the market that Atari had killed in America and put in on the map in Japan. without NES its possible that console gaming would never have recovered in America and never made it big in Japan, with people choosing arcades/PC instead.
When the herd loses its way, the shepard must kill the bull that leads them astray.