When I first saw David Janssen I wasn't impressed. He seemed too quiet and when he did speak, his voice was hushed. But I didn't write him off. I continued watching him. Once I got used to his personality, I began to see how versatile he was as an actor. He could play a mild-mannered doctor on the run (in the Fugitive) or a hardened private detective (in Harry O).
He was popular with both men and women. Men liked him because he could be the macho tough guy, defeating the bad guys. Women liked his charm and gentle side, being able to stop and communicate with genuine concern.
His personal vices of smoking and drinking caught up with him at the young age of 48 and he was gone, dead from a heart attack. Thankfully, through TV and movies, his legacy lives on.