We were very close to landing (the pilot had already told the flight attendants to prepare for it) and what looked like 500 feet away from the left wing was a big peak covered with snow and pine trees.
I mean, yeah, if I had thought about it harder I would have realized that there are snowy peaks very close to Irvine and etc etc but in the moment it seemed so out of place that I was pretty sure we were going to crash into the mountains and die. Instead of giving me a heart attack like I'd have guessed, it made me instantly calm. What it did, actually, was make me think I was dreaming. My dreams, when centered around airplanes, consistently have the plane doing something bizarre, like flying low amongst mountains, so when I saw the snowy peak I figured, oh well, I'm dreaming and so we'll just drift down into an icy creek and then me and all the passengers will wander off out the plane windows and camp out in a nearby cave until the blue-footed, polka dotted bears show up. When we landed at the Orange County airport five minutes later without incident I was fairly shocked. And disappointed at the lack of creativity that my imagination bothered to invest in my dream.
And then I went off and did Serious Prospective Graduate Student Visiting Day stuff for 2 days, which felt like even more of a dream.