Annoying Software Product Demos

One of the my largest pet peeves has to do with software product demos and the lack of attention paid to information I provide ahead of time.

I cannot tell you how many demos I sit in on where the sales rep asks me for specific things I want covered ahead of time, and then proceeds to give me a standard demo of their product.

If you are going to ask me to take my time to evaluate your product, do me the courtesy of answering my specific questions in the most complete possible way.