I placed a countdown in my sidebar (towards the top) to keep track of how many days we have left until the implementation of Summorum Pontificum on September 14th. Of course, all you really have to do by now is subtract today's date from 14, but using a countdown is more fun! :D I meant to do this a long time ago, but I forgot.
Anyway, it will be interesting to see how many Masses according to the missal of John XXIII are actually celebrated on that day (or at any time thereafter, really). Let's keep our fingers crossed.