I'm using scope.$first and scope.$index to apply accordion to my content when ng-repeat finishes populating it. At first I was using just scope.$last but faced this problem - when try to search for some info (using filter) and then turn back to the whole list, accordion doesn't apply.
How to apply accordion when ng-repeat finishes and save it further while filtering?
I suggest wrapping the "apply accordion" functionality into a directive. Define a template for the ng-repeat stuff, then $watch() the model data for changes. When the $watch triggers, apply the accordion stuff.
See also https://groups.google.com/d/topic/angular/lACrEA-TIto/discussion
and
http://angular-ui.github.com/bootstrap/