The first thing that comes to mind is seeing the sunrise going to AMS.
The other was my first and only flight in F. I was 14, my mom brother and I gave up our seats on the CVG-SEA leg of our trip, got routed through IAH, all in FC. I was given a choice of a swiss bacon cheese burger or some salad thing. I chose the burger. When they brought me out a salad I complained and they told me it was just the first course.