There is a «Hulk No More» story line where Banner can't access the big green guy, but it's for a brief time and caused by another Hulk (yes, there are multiple Hulks). (businessinsider.com)
He gives the better part of his performance as the big green guy, while his Banner transformation sidelines him a bit. (thedailyrotation.com)
Mark Ruffalo manages to make the big green guy human even before he calms down enough to revert to the form of Bruce Banner. (leonardmaltin.com)