Yes, several threads out there, but Search seems to be flaky (couldn't find "double" in the Marriott forum despite the ongoing double night credit promo).
I was all alone with Captain/FO/3 FA's on a USAir 737 from BWI-CLT a couple of years ago. There were storms, delays, etc., all day long - somehow I was the only one that made it to the airport and still wanted to fly that leg.
I took my favorite 2D seat (yes, I was upgraded

) and the FA/Pilot address me by name as the went through all the announcements. I felt obligated to actually pay attention to the safety briefing.