+1  A: 

Just be yourself.

Lucas McCoy
Don't be yourself. You're probably an idiot. Be someone much cooler and smarter than yourself.
JSBangs
@JS Bangs: Hilarious!
Lucas McCoy
At the end, irrespective of answer, ask the same question more than once!
Aiden Bell
+2  A: 

Be passionate about the things you have done, what you'd like to do. Show enthusiasm. Listen and act interested.

Alan Moore
+1  A: 

Most interviewers should overlook nervousness because they understand the strain of interviews, but i would say confidence is a big factor.

As long as people believe that you know what you are talking about, it rarely matters what you actually say.

Brian Rudolph
A: 

Don't talk over your head, it will always get you in trouble. Make sure you brush up on which ever language you are assuming the position is for, as there are times that not only abstract examples are asked of you but actual technics that you would use to solve a problem.

Also, I'm sure it goes without saying, but make sure that you do know history behind the company, along with about what the position you are interviewing for is about.

Good Luck!

Frederico
A: 

Do not try to lie your way through the interview. If the interviewer knows what they are doing, they will see right through that. Better to say "I'm not familiar with Technology X" than to start making up stuff.

Cody C
A: 

There are some general tips that are applicable for any kind of job interview, obviously:

  • Be prepared: know about the company, the position, the people who work there.
  • Have strong answers for the usual questions (there are lots of lists on the internet).
  • Dress well, have a firm handshake, look people in the eyes, sit comfortably and don't fidget.
  • Generally portray confidence.
  • Practice smalltalk if it doesn't come naturally to you.
  • Match the intensity and character of the interviewer (it tends to make people subconsciously connect with you if you behave similarly. this doesn't mean actually copy them.)
  • Have fun and don't be stressed or scared!
Gabriel Hurley
I find it fascinating that about half of these are just social skills.
Alex Baranosky
A job interview is inherently a social interaction... I've interviewed a few hundred people hiring for different positions over the last few years and I've met plenty of people that lack even these basic skills.
Gabriel Hurley
A: 

A few ideas which may overlap with other answers:

  • Progamming Interviews Exposed has some tips that you may find useful.
  • Research the company a little bit so that you can answer the, "What do you know about our company?" that may be asked.
  • Ask questions about the work environment to see if you can get the person doing the interview to picture you in the job and what would be done in a week, month, etc.
  • Rehearse answers to some common questions like the, "Tell me about yourself," or "Why do you want this position?"
JB King