They'd been running this vote for a while, gathering votes for the best representation of various genres, platforms and eras of gaming across the history of video games.
See the detailed results for yourself on this PDF!
(listed by era, genre, platform etc)
http://americanart.si.edu/exhibitions/a ... ggames.pdf
And a more simple list is on their official page:
http://americanart.si.edu/exhibitions/a ... mes/#games
Whether or not ALL these games represent 'art' is subjective (aha, ha, ha) but there are some cracking classics in there. I was pleased to see Earthworm Jim and Dune II make the exhibit.