This is Oscar. He works in a nursing home in Providence, RI. You should read about him here in the New England Journal of Medicine. Then read the story the Boston Globe wrote about him here. The Globe also has pictures.
Oscar is now a Very Famous cat, as the Globe's story has been picked up "by the wires" and can even be found on CNN and Google News.
Mom doesn't know why Oscar pulled her heartstrings so much, but Jasmine told me that Mom's Mim-may (Mim-may's Mom) was in a nursing home in which a cat patrolled the halls much like Oscar. The nurses there said he would sleep on beds of residents who were near death also. This cat was unlike Oscar in that he also slept on beds of residents who were not dying. But like Oscar, if a resident was near death, this cat stayed.