Don't worry it could have been worse... it could have been this 'government' workerHero in a half shell said:You do realise that it was actually the Men In Black who answered your door, and you were involved in an hour long massive incident involving aliens, shootouts, chases, fights, explosions and Will Smith rapping, at the end of it they repaired the damage, and told you you had just completed a boring government survey about drugs, heck, one of them even gave you $30 (Thats how I know it was Will Smith, as he was always really nice to the people he zapped, whereas Tommy lee Jones was rather apathetic about it)
So that hour was probably the most amazing, adrenaline pumping, mind blowing adventure of your life, but you can't remember it.
Oh well, in response to your question me and my friend when we were about 10 were walking about our village, and a man in a suit shouted over to road to us and called us into the back of his van. Naturally we obediently got right into the van, and it turned out he was a council planner doing some community work. We answered some questions, there were other older people that properly talked to him about the area, and it took about half an hour.
Oh, and by the way...
To add to this, I don't usually get any random people knocking on my door unless they're jehova's witnesses or teleco workers. I have a sign on my front door that says 'no doorknockers' , usually I will answer the door when they knock and ask them if they can read, if they say yes then I close the door in their face.