I created post that listed all the links I've done for OSU and MSU this year with regards to their 2013 football teams. For those interested in a bit of a primer before the B1G Championship game so that you know what to look for, you can follow the link (where there are 18 total posts about these two teams).
If you don't want to go through all of them, I'll pull out some of my favorites:
Here's a general look at OSU's Flood play, which is probably their favorite way to attack defenses deep, something like this will be a play OSU will likely pull out on any down/distance, because it isolates defenders (including safeties and LBs) on WR in the cover 4, and it requires great communication and great eye-technique in cover 3 on the third and long plays:
Here's a counter look that I hadn't seen before (didn't see it against Michigan, FWIW) that OSU runs out of the inverted veer. I wouldn't be surprised if they pulled it out against MSU if the backside LB chases and the backside safety focuses on coverage instead of LB level fill.
How MSU will use their base offense to attack OSU's defensive weaknesses.