I read an article about interviewing and the writer said that after the interview the executive went to the admin assistant and asked what she thought about the candidate. Unfortunately, the candidate had been rude to the assistant and impatient while waiting. Not a good move on that person's part.
Never underestimate the seemingly little people. We may look like we are just sitting behind our desks smiling and answering the phones, but if an employer is smart they recognize we can be their eyes and ears and our opinion counts.
If you want to make a good impression, be nice to the receptionist, the doorman, the janitor and the person who gets your coffee while you wait. The interview starts the minute you walk in the building. Oh and by the way, did I mention the story about the person who cut someone off while driving and then gave them the finger. I'm sure you can guess the rest of the story...
Check this related article out, It's Better to Look Good Than to Feel Good, by Kemetia Foley.
 Bruzzese, Anita, 45 Things, Impress the Hiring Manager -- and the Receptionist, http://www.45things.com/blog.php (accessed March 9, 2008)