I agreed to pick up a test print of an ad campaign and brought it to the client in their office before *waves* all this. This is why I stopped doing that, though:
Me: Okay, here’s how it turned out. I think think it looks pretty good.
Client: Aren’t you forgetting something?
I wracked my brain to think if I’d missed a deliverable.
Me: Um… I don’t think so?
Client: “Here’s how it turned out, sir.”
I blinked at him for a few moments before I could even understand what he was saying. It took less time to get really, REALLY angry about it.