I totally agree.

And another thing that is annoying is when you ask a question and the person doesn't know the answer but either tells you a bunch of generalities that anyone would know, and/or tries to find the answer while you stand there, when you could go back to your desk and look for yourself.  What I would like is a quick answer, even if it is "I don't know" or even "I don't know off the top of my head".  They could throw in some keywords to search for, if they think it might help.