I'll say this as well....
Going into this year, I've always been fearful of Atkins playing against extremly quick (as well as the rest of the ND team) opposing guards. Siva was pretty much the benchmark, as he made Atkins look really bad his freshman year (in my opinion).
Today, the way we played defense, I loved it.
We had bigs helping on ball screens. I remember a few possessions where Cooley really helped out, and even swiched on a guard. That never happens in Brey's defensive system. Grant was very vocal on the defensive end, really calling out ball screens and help. If we play like that the rest of the way, I wouldn't be crazy enough to call for a National Championship, but man, we're going to be a tough match-up for anyone.