I personally don't need the MoMA's approval to think of video games as art but apparently this is a big deal. Here is the list of what they aquired so far (from MoMA's website):

Pac-Man
Tetris
Another World
Myst
SimCity 2000
vib-ribbon
The Sims
Katamari Darmacy
EVE Online
Dwarf Fortress
Portal
flOw
Passage
Canabalt

Now, I haven't played through all these games and am not even familiar w/ some but this seems like a pretty good start to covering gaming history. Certainly, there are some glaring omissions. First off, apparently MoMA has not even talked to Nintendo but if they can't get Mario or Zelda games, the whole thing is bunk in my opinion. I also think they need an classic American arcade game to compliment Namco's Pac-Man (andAtari game would be a logical choice). Seems to me too that they need a big-budget FPS of some sort to really capture gaming culture and an open-word, non-MMO RPG like Skyrim. There looking to go for forty though games overall so I'd rather not dwell too much on what they don't have (esp. sinc they do plan to include many of the things I mentioned).

As far as what they do, the ones I am happiest to see are:

SimCity 2000 - This is probably the game I have spent the most time playing in my life. I just love it. Naturally, the original SimCity was more groundbreaking but 2000 is the one where they really nailed the formula and had the perfect balance of user-friendliness and complexity. I really like Maxis's philosphy of not creating games but software toys at the time. (You see a game, like baseball, you can only do one thing w/ but a toy, like a ball, has limitless possibilities...) You could really play SimCity 2000 any which way you wanted--though lets face it, the best thing to do was build a huge city and then destroy it w/ natural disasters.

Passage - I can't imagine this was anything but a no-brainer for them. It is the first video game I'm aware of created specifically to be art that garnered any kind of main-stream media attention.

Tetris - To me this stands out as perfect elegance in design. There are lots of games that are equally simple, equally fun or equally addictive but Tetris just has that certain something that makes it timeless. Perhaps the good people at the MoMA can figure out just what this is because I have no idea why there's about ten versions of Tetris I can't seem to stop playing whenever I pick them up but Dr. Mario just doesn't do it for me. (If they do want to include another falling bricks game though, I propose Lunines.)

These ones, I am more skeptical about:

Myst - This was a big deal at the time and, as per gamer lore, popularized the CD-ROM drive for gaming. Personally though I just think it shouldn't be included because it sucks. And I say that blunty because it is absolutely horribly awful to play and anyone who says they like it is lying. I might suggest Return to Zork as a similar adventure game that is not terrible. Hell, put Liesure Suit Larry in the exhibit for all I care. I just don't want to hear another word about Myst. We got enough of that in the nineties and it sucked then too.

EVE Online - Adminttedly, I am not a huge MMORPG guy but it seems to me Everquest was earlier and more influential and World of Warcraft is the peak of the genre as far as popularity. Picking EVE Online is like doing an exhibit on heavy metal and including Judas Priest but not Black Sabbath or Metallica. You could do a hell of a lot worse but there's just stuff that makes more sense when you only have a limited selection.

And these are a few I now want to play because of the list:

vib-ribbon - This doesn't sound so mind blowing w/ today's technology but had I been aware of a PlayStation game where you take the disk out and put a music CD of your choing in, well, that would have had me going freaking nuts.

Dwarf Fortress - City building w/ rouguelike qualities complete w/ ASCII graphics? I could play that at work and people would just think I was doing some crazy computer thing beyond their comprehension. Count me in.