That's so sad.
I remember he did another show called THE MAGICIAN after Hulk. But to my child's eyes he might have well have still been David Banner who was posing as a magician now instead of a taxi driver or hospital porter - for weeks on end. That series never really seemed to take off like HULK did and quietly disappeared pretty rapidly.
Then there were the reunion Hulk movies, which - while somewhat crazily offbeat and quirky, with the likes of a cut price Thor, etc - were somehow shadows of the original series.
At least Bill had the good grace to end the series with a very final instalment, although I believe there were plans to bring the character back for one more movie before Bill's untimely death put paid to that.