1) Understand what the company is looking for.
2) Understand what the interviewer is looking for.
3) Focus obsessively on showing how hiring you solves their needs.
Everything else is window dressing.
(For a different perspective, and to read the post by my buddy Paul that inspired this, click here)
Nice, I think a lot of people could use that advice.
I got my current job in a similar way. However, instead of figuring out what they thought they wanted, I convinced them I was what they wanted. I needed to, because they were not hiring. (I had no post-college experience, but I had an entire project proposal and agreed to work on contract to hire).