Did you prepare your list of Interview questions.

Nothing kills your chances for a career opportunity  when the interviewer asks “What questions do you have?” and the answer is "No, I do not have any questions".

What a waste of an opportunity...

Do your homework, take 20 minutes and do a bit of research.  Google is a great tool - use it to find out news, stock prices, industry news (trade journals are great), competitive information and more.  LinkedIn can help with company information (do not forget the website) and find contacts who can provide insight about the company (and maybe your future boss).

As accurately stated in a recent Forbes.com article, save questions about compensation, flexible schedules and other benefits for later interviews.