Here are the things that I noticed:
LJ didn't give a cushion and played much of the night in Blackmon's face - typically most corners got torched deep when they tried this but LJ pulled it off.Blackmon was open at times, but they disrupted his routes and on many occasions forced Weedon to second and third reads which he was not near as comfortable with. The other corners I did not really notice as much in pass coverage, but that is good because it means that they were not getting beat or missing tackles.
Klein and Knott are freaks. On several occasions they made plays 1 on 1 that if they missed would have been huge gains. Also the OSU players were getting knocked back at every tackle instead of falling forward and that left a lot of yards on the field for OSU that they typically get. The tip that Knott made on the interception is an elite play - he read it perfectly and made an NFL caliber play.
The O-line looked great at times and when there was pressure there were open lanes for Barnett to run or buy himself more time. OSU had to stunt or blitz to bring pressure much of the night.
The WRs looked better than they have in a long time at making people miss. Gary, Horne, and West all looked very tough to tackle. This is finally starting to look like the offense that it was supposed to and hopefully will continue to get better.
I know that there is more to mention, but just a few of my observations.