Dear All,
A good example (I would say that...) of hot loops in locally unipolar regions as seen by SOT (that Harry mentioned) is video 4 in our paper: http://www.iop.org/EJ/article/1538-4357/689/1/L77/23039.html
It also shows that dynamic events in the chromosphere/transition region cluster around the active region neutral line in mixed flux regions. These are the resolvable events that Jim referred to that don't reach high temperatures.
Best wishes, David Brooks