Of course I'm not quite sure whether this could be considered "great", but this new Gallery forum definitely needs at least one entry...

So here it is: An example video edited using kdenlive: https://archive.org/details/Curacao_Under_the_Wind_and_Under_Water

(BTW: I created this underwater video before the "LMS Colgate white balance" filter became available - which renders proper color balancing of underwater video much more easy...)