Holy crow!
That would be my worst nightmare. I would have to put my house up for sale! Seriously, there were wasps flying around my front window last week and it made me so nervous I left the house for a few hours.
I've actually seen bees do that once on my uncles tree a long time ago. A beekeeper person came out and got them too. He reached in bare handed, grabbed a fistful that he claimed had the 'queen' in it (like how could he tell!?) and put them in a big box. And all the other bees followed them in there.
Cool pics. Thanks for sharing!