This has to be one of my favorite corporate logos. I love the balance between the two squares and the minimal type style. There is a Swiss Air Lines office here in New York that has this logo up nice and big, but on big red cubes. Looks great. I have to get some photos of it.
http://www.mts.ru/upload/images/design/logo.gif
It’s greatly enhanced when you see it applied across the actual aircraft of Swiss Airlines (on the twin jet engines). Eye-candy.