I have many of these...some personal, some professional.
As a young nurse (age 21) I was caring for a woman who had been dying for a couple of days, unresponsive, hospice type comfort care. I was working the night shift. I went into her room at about 3am and she was sitting straight up in bed, eyes wide open. She said "Jesus, Thank God you've finally come for me"...and she was looking past me.

Being young, and having seen The Ten Commandments about 50 times, I didn't want to turn around because all I could think was that when Moses went up on the mountain to get the 10 Commandments and "saw" God, he got old! So I backed out of the room. I got a co-worker and we went back in a couple of minutes later and she was gone.
Another patient was a lovely lady who had been a patient a few times herself, and had also been a frequent visitor because her husband was in a lot too. Well, he passed away finally. A couple of months later, she was back in and doing poorly. A co-worker and I were at her bedside providing care, when suddenly the lights in the room started flashing rapidly (and no one was touching the switch because we could see it and we had Maintenance come up and look at the lights and the switch later and they couldn't find a problem and it never happened again) and she looked up and smiled and said "Victor (her late husband) you're here for me"...then she took a breath and died.
My father-in-law was dying in the hospital. He was a great Irishman, and was failing very close to St.Patrick's Day. He was what I would call semi-comatose for about a week prior, but every once in a while he'd ask "When is St.Patrick's Day?" and we'd tell him...6 days, 5 days etc. as the week wore on. My DMIL and 2 DSisILs were sitting vigil by the bed, I was there quite a bit although I did go home at night to sleep. I told my DSisILs to make sure he knew when St.Patrick's Day arrived, because he either wanted to die on it or live through it...I wasn't sure which, but I knew it was one or the other. They did, and St.Patrick's Day arrived and I could tell his time was growing very short, but he spent that whole day talking to people...not to us in the room, but to people only he could see. And I mean talking like he was at a party..."hey Bill, how have you been???!", "Sully (every Irishman knows someone named Sully!), good to see you again" and so forth. Some of the names he said were names I recognized as his friends that had gone before him. One of my DSisILs asked if her grandmother (his mother) was there and he said yes. It really was quite amazing to me, and strangely comforting. Later that evening, my DMIL and one DSisIL went down to get a quick bite to eat, and my other DSisIL & I were in the room. So we decided to reposition hima bit. My DSisIL said to him "You know Dad, it's OK for you to go. We'll take care of Mommy" and then I said "Yes, and it sounds like you have a lot of people waiting up there for you". At that moment, he opened his eyes, looked at me and very clearly "You bet I do...everyone's there". I left after a while, my DSisIL called at about 3am to tell me that he seemed to slipping more deeply into the coma, the nurse had just suctioned him & he didn't react. She said "He actually looks different...like he's gone and just has to stop breathing". He died at about 5am on March 18th, so I guess he wanted to live through St.Patrick's Day! As sort of a tangent to this story...he had been in and out of the hospital a few times in his last few months, he always requested to be on my unit, so he and my nurse manager got very close. She loved him and he called her his "Lithuanian Princess". So, when I called her to tell her that he died (it was a weekend and she didn't work weekends), she said "Oh, what time did he go?". So I said "He died about 5am, but my DSisIL called me at 3am to tell me that he looked different and she thought he was slipping more deeply into the coma and so forth". My manager said "At 3am, my husband said I shot up in bed and said
'what the heck are you doing here?' and then I laid back down. I don't remember anyof it, so I never woke up, I guess I did it in my sleep". She & I are firmly convinced that my father-in-law "stopped by" to see her on his way out, because they had shared such a special relationship. And amazingly enough, every March 18th since the day he died, she wakes up at about 3am, for no good reason....
My DMIL also died kind of quick once she decided to die. She had been sick with cancer for several months, we were caring for her, she had taken sort of a turn, so we called crazy SisIL from out of town thinking that was it. Well, then DMIL stabilized. Crazy SisIL was there, DMIL asked her when she was leaving, crazy SisIL said "not for a week" and I think DMIL decided "I've had enough of this" because she was dead the next morning, 5 minutes after telling my other DSisIL that she was "fine". Crazy SisIL is REALLY annoying and I think DMIL figured she get out fast so we could have her funeral and then crazy SisIL would go back to her home state, 1500 miles away (thank God!) and not drive us insane for another week. DMIL was a very practical woman.
I have seen many people do something similar to what a previous poster in terms of seeming to get better and then dying. I believe the PP said their loved one perked up and had an ice cream soda. We call it "The Last Hurrah" and it happens quite often. A person will be quite ill one day, and the next day it is like a miraculous recovery! They are suddenly doing great and asking for things they haven't wanted in a while and being conversant and so forth. I always hate to see that in one sense because it gets the family's hopes up and usually within a couple of days the person is dead. On the other hand, I like to see it because I think it gives the family some good last memories. But, as nurses in my hospital, we can literally give report on a patient and say "This one is having their last hurrah" and everyone knows what it is and we know what to expect within a couple of days....
Death is very interesting to me, not in a morbid way, but in a spiritual way...I think there is so much we do not know about it, so many different "levels" of death, Heaven, the afterlife...call it what you want based on your own beliefs.