Lots of Americans in Vietnam now. Vietnamese people have also seem to have embraced American culture wholeheartedly.
The gastronomic results of the mix have been fantastic. Vietnamese food is already amazing but there are now a ton of food joints that use Vietnamese flavors and southern style bbq techniques for some truly spectacular results.
I have seen some amazing work with my own eyes. Like buying a rusted farm implement from one vendor in a market and taking it to another to have it sharpened and getting back what was basically a brand new scythe.
But the vast majority of these amazing "look what I built" videos from Vietnam are staged and are actually the work of production companies with teams of people. Here is an expose of the primitive building genre where this got its start: https://www.youtube.com/watch?v=Hvk63LADbFc
was cool and reminded me of the guys who fixed my scooter in Vietnam for about 30p a time.