For people my age, there is a soft spot in the heart for Atari, who pushed the initial frontier of video games back in the late 70s and early 80s. For years, they set the standard, and even when Intellivision (which I loved) and Colecovision came out, Atari was always the cheap alternative with the widest range of games. Activision games made for Atari helped to extend their dominance; for example, I remember Activision's football game being a reasonable facisimile of Intellivision's football, and a significant upgrade over the original Atari football, which was more like 3-on-3 pudding battles, with a football you could steer in the air! However, I don't recall Atari being relevant since, well, Nintendo.
Well, Atari may be "Back in business, baby!" according to this article. It looks like they are aiming at rekindling their relevance by making games for other systems, as well as entering the online multiplayer genre. It'll be interesting to see if they can come back from the dead.