I need some examples of dramatic irony, situational irony, or just irony in general about any of the following Carver short stories: Cathedral, What do you do in San Francisco, What's in Alaska, Neighbors, They're not your husband, Will you please be quiet please, Nobody said anything, or Are you a doctor?

Ray Carver's "Cathedral" contains many examples of irony. The short story is narrated by a man who does little but work at a job he dislikes and stay up late drinking, smoking pot, and watching nothing in particular on television. Perhaps the first irony revealed is that this couch potato is married to a woman who lives on deeper levels: she once felt such despair that she attempted suicide, she writes poetry when an experience moves her, and she's bonded with a blind man named Robert with whom she exchanges audiotapes.
As the narrator describes his discomfort with Robert's upcoming visit, he seems unaware of the unpleasant traits he shows the reader. He admits he "wasn't enthusiastic about his visit. He was no one I knew. And his being blind bothered me." This is the first of many examples of dramatic irony because while the narrator sees nothing wrong with these remarks, the reader is aware that they reveal his close-minded lack of interest in new experiences and his irrational fear of blindness. Upon learning that Robert's wife Beulah has died, his concern is not for the bereaved widower but with the stereotyped belief that Beulah is "a name for a colored woman." He doesn't see that this description is pejorative and reveals his bigotry. He unknowingly shows his sexism and superficiality in his assumption that a blind man would be unable to compliment his wife--as if the only positive attribute a wife could have is her appearance.
While the narrator settles in for another dull night of smoking pot and watching a television show about medieval cathedrals (only because there's nothing else on), Robert experiences these same events in a far more engaged way. He smokes pot for the first time, relishing the new experience, and takes a philosophical interest in cathedrals. "I’m always learning something. Learning never ends," he says. He even gets the narrator to help him "see" the televised cathedrals by convincing him to draw one while he places his hand over the narrator's as he draws. While the narrator finds the blind man's life "pathetic" and worthy of pity, he is unaware of the situational irony: that this blind man lives life to the fullest while his own lack of interest in life makes him the truly pathetic and pitiable man.
In fact, the greatest irony of all comes when the reader considers which of these two men is more handicapped? Which one of them is truly blind?

There is situational irony in Raymond Carver's short story "Cathedral." That is, there is an incongruity between what is expected to happen and what does.
In "Cathedral," the narrator and his wife are somewhat estranged, mainly because the narrator/husband is unsociable and withdrawn. Even with his wife, he does not share his feelings or ask her to share her thoughts and emotions. Consequently, his wife seeks out others such as a blind friend of hers, with whom she develops a close relationship. This makes the husband a little jealous. So, when the wife tells her husband that her friend is coming to stay at their house, he is uncomfortable about the forthcoming visit.
After the blind man named Robert arrives, his warm and outgoing personality diffuses some of the tension between the narrator and his wife. Nevertheless, the narrator is rather taciturn while his wife talks at length to Robert. When she leaves the room, the narrator asks Robert if he wants to smoke some "dope" with him, as is his habit at night. "I'll try some with you," Robert tells him. When the wife returns, she asks her husband with disapproval, "What do I smell?" Nevertheless, she joins them. After a while, though, she grows very tired and falls asleep. It is while they are sitting quietly in the room that Robert asks the narrator what he is watching on the television. "Something about the church and the Middle Ages," the narrator replies because this is all that he can get to come in on his set. When Robert hears the word cathedral repeatedly, he asks the narrator if he can describe one to him. The narrator's attempts at verbal description fail. So Robert suggests that with some paper and a pen they could draw a cathedral together.
The narrator gets a paper shopping bag and returns. When he spreads the bag on a table, Robert moves near him and runs his hands over the bag. With a familiarity, Robert encourages the narrator to draw. Then, he tells the narrator to close his eyes; the narrator does so, observing, "So we kept on with it. His fingers rode my fingers as my hand went over the paper. It was like nothing else in my life up to now."
Ironically, the awkwardness the narrator anticipated with Robert's visit doesn't happen; instead, their interaction is rich and rewarding as Robert touches the narrator in more than just a physical sense. He helps the narrator open his mind and find meaning in sharing with others.