I'll bite.
Several years ago, me and my wife were away on an amazing trip in Indonesia. We flew a long, complicated itinerary using frequent flyer miles, on Singapore Airlines. For those unfamiliar, if you're on a FF award ticket, you are the lowest priority for the airline (not really a "paying customer") so you come last when anything goes sideways.
We spent a week scuba diving on a very remote, pristine, tiny fly-speck island in the middle of nowhere (3 flights beyond Jakarta). This places is waaay, way off the grid, very very isolated from the rest of the world. While there, a major volcano started erupting elsewhere in Indonesia, seriously disrupting air travel across the region. We knew nothing of this. After leaving the little island (5 hours by speedboat to get to the nearest town) our vacation plans had us flying two legs to the city of Yogjakarta (not Jakarta, Yogjakarta is another city), in central Java. First flight was uneventful. Second flight was "delayed". While waiting for that flight, I noticed that every TV in the airport was tuned to the same station, which was running loops of all the disasters unfolding from the still-erupting volcano - which I quickly discovered was at our intended destination! Incredibly, our flight was merely delayed a few hours (most international airlines had canceled all flights in the region). Our flight to Yogjakarta went out a few hours late. We landed in what looked like a snowstorm - but all that gray stuff covering the ground and falling from the sky was ash. There's a lot more to the story, but skipping ahead to the good airline experience...
Our long flight home was supposed to go Yogjakarta - Jakarta - Singapore - San Francisco. That flight started in 3 days. But after our plane landed, the Yogjakarta airport finally closed due to ashfall.
The problem with a FF award ticket is that if you miss a leg of the flight, tickets for the rest of your flights are canceled, with no requirement for the airline to accommodate you. They might, but if there's a disruption, even if they are willing to put you on a later flight, they might push out days or weeks until there is another "free" award seat (and those are limited). My worry was that if we were stuck in Yogjakarta, we would miss our flight from Jakarta, and we would have to buy a ticket home from there (possibly thousands of dollars). I was determined not to miss that flight, but the airport was closed, and the volcano was still erupting majorly.
I looked for alternate ways to just get from Yogjakarta to Jakarta. There's a train, but it's a 12 hour overnight, not fancy and...with the ongoing volcanic disaster, tickets for the train were going fast. I pushed my way through crowds at the train station and managed to buy 2 of the last few tickets out. We took the overnight train to Jakarta and dragged ourselves to the Jakarta airport. Alas, Singapore Airlines had canceled all their flights indefinitely. To my amazement, they put us up in a 5-star hotel until flights restarted, and guaranteed us seats on the first flight out (they did NOT need to do either). They kept their promise, got us from Jakarta to Singapore, but...that flight's arrival was late and we missed the connection to San Francisco. They then gave us vouchers for an in-airport hotel for the night and put us on the next day's flight.
It took us about 4 days to get home, but Singapore Airlines did the right thing, over and over again, getting us what we needed, which was significantly more than what they were required to do. Even though we were on a "free" ticket (FF miles) they took great care of us amid lots of chaos, and treated us as valued customers the whole way.
Singapore Airlines is great. I'd fly them happily any time and recommend them to anyone.