1. Don't lie on your resume. There's nothing wrong with a little bragging, provided it's true, but don't exaggerate too much. We had one candidate whose actual verifiable experience would have been a good fit, but their resume claimed job titles and responsibilities that were disputed by people we knew at their prior company. Buh-bye.
2. Explain why you're interested in this job. Why this one instead of thousands of others? If you're passionate about some aspect of the work, say so. If you have wanted to do this since you were a little boy or girl, I'm skeptical, but sell me the story. At least show some enthusiasm, even if you have to fake it a little.
3. Know the job description. You don't have to memorize it, and it's fine to bring a copy with you, but have a clue what the job entails. Consider what we listed as the desired job skills and experience. If you have gaps compared to our wish list, address them rather than ignoring them. Honestly, we would be happy with someone who is an 80% match, provided they have the core skills and seem genuinely interested in learning the rest. If you're potentially overqualified, make sure to address that, or we may assume you'll leave as soon as the economy turns.
4. Ask questions. They don't have to be profound. Request clarification or details about something in the job description. Ask about a recent news story or press release about the company. Heck, ask me to describe a typical work week. Just don't ask about money.
5. Remember the basics. Arrive on time or a few minutes early. Dress appropriately. Be polite, be professional, but have a plan to kill everyone you meet.