One of my pet peeves is holding a door open for someone and they walk past like you aren't even there. [-Bill]
Exactly! I hate that more than any...well...a lot of things.


Loudly, I always say to the back of their head, "HEY, NO PROBLEM... YOU'RE WELCOME". [-Bill]
As for the "you're welcome" bit, I also do it, but in a normal tone of voice and with a polite smile on my face. That makes'em feel absolutely the worst [-FiReSTaRT]
I also do this, but I tend to say it in a manner somewhere between the two. Maybe just loudly enough that I think they'll hear me as I turn around.