Not just corn but also soybean futures are at record levels, possibly other crops too, due to the most extreme drought and heat since at least the 1950s. This situation as been getting worse over the past couple of months. A few months ago, farmers and the market were expecting a big crop because so much was planted; now it looks like a very, very poor crop.
This will increase food costs in the supply chain and food prices at the grocery store. How much, depends on how weather and crops behave in other growing regions of the world - if they can make up for the decline in the US crop. So look for weather disruptions elsewhere.
Ranchers are cutting their herds since there isn't enough pasture and feed/hay prices are high. This will cause a temporary increase in beef supply, as those head move through feedlots and go to slaughter, but then we will see higher beef prices - not sure when, end 2012/early 2013 maybe?
As for ethanol - the price is already jumping. I don't know if this link will work but anyway you can search for ethanol futures.
http://www.cmegroup.com/popup/mdq2.html?code=ZHX2&title=November_2012_Ethanol&type=p#link=monthly