I just updated my drag and drop tier sheet application for the 2012 season. http://sleeperbot.com/football/tools/tiersheet/
Last year, I got feedback that the default rankings were not ideal. This year, I am basing it off the Expert Consensus Rankings, which is a combination of rankings of all the top fantasy ranking sites.
You can double click player names to highlight them during your live drafts. You can save your own version of your tiersheets with a unique link if you do not agree with the Expert Consensus Rankings.
The cheat sheets are free, as always. Enjoy!