@960gs: I was also excited about it some time ago, now I use http://www.1kbgrid.com/ It's nice and lightweight, does the same with a more simple approach. I usually put it together with mayerweb's css reset, having a ready basic reset+grid in a 1.7kb file before minifying.
Yeh I am generally more interested in the gallery on 960.gs, I think I use the css framework once but wasnt all that keen, the examples and http://960.gs/demo.html I do find very useful though.
