This ones useful for spotting divergence on OBV, and also includes CCI to show overbought and oversold areas in the volume. I've coloured the OBV bar with the CCI levels. Look for divergence (best results on 5min chart I believe) with this and you can spot where to sell if a second peak is not supported by volume, also shows where the big guns are dumping lots of volume!
A volume study is always a good addition to any analysis I feel, and this is one of my day to day always on indicators.