If not for Maxis games I wouldn't be on this site. They were largely what got me into videogames. Sim Copter, tower, the various city games and don't forget Ant! I'm currently playing Sim City 4 and it's a delight!
This is a tragedy, I know the Maxis of the last few years wasn't the same Maxis that made all those hits, but it will always represent some of the best games ever.