Rob will probably have heart failure that I, of all the not-so-tech-savvy Boardies, am saying this, but there is a dandy little search box located at the tip top right of the thread list screen. Most roll calls are pretty much the same (although we could standardize to make real) with Month Year Roll Call - as in June 2013 roll call. Just type in Roll Call in the search box and they all come up in a nice "latest first" list. And you can even just hit enter and it searches .... you don't even have to click the magnifying glass thingie.

But it is a cool idea!