The job market is super-competitive right now, and you have to do as much as you can to stand out. So here's a list from AskMen.com of the top three ways to make yourself memorable in a job interview.
#1.) Knowing a Lot About the Company. Do some research, and find out as much as you can before you go in. At the very least, that means going to their website or Wikipedia, and reading as much as you can about them.
--Also, check their website for press releases from the past two years, which should give you a good idea of what they've been up to. Most of it won't come up in the interview, but if any of it DOES, you'll be ready for it.
--And if it DOESN'T, there still might be a chance for YOU to talk about something you read. Just don't force it.
#2.) Paying Attention When You Walk Through the Office. Look for anything you can talk about that might make them feel like you're a good fit. Even if it's something small, like the paintings on the wall or the dress code.
--If you can talk about something in the office you LIKE, they'll remember that about you. But don't dwell on it. Once you find common ground and make a good impression, try to start talking about the actual JOB.
#3.) Telling Them Something They Don't Know. That doesn't mean you should pull out some random piece of trivia. But if you know something they don't about the business or the industry, they'll wonder what ELSE you know.
--Just make sure you're right.