No, it wasn't that one. He had a wife I think, I thought the story was quite poignant and well told. I don't particularly like a slew of villians in comics, thus never really got into the whole superhero thing since they do that usually, at least the long running ones and for good reason I suppose. I prefer one or two well done ones and a tight consistent story...that ends.
*the gf thing got me thinking and I looked it up, apparently we are talking about the same one (killing joke) and he had a wife not a gf. Sorry didn't remember the comedian thing.