As someone who both had to do a presentation when I got my last job, and then had to watch other people's when I hired my own maternity cover (it was a very small organisation!) I can say with total confidence that... it completely depends. Wow. What I help I am.
No, let me reconsider. I know I want it to be ten minutes or less - so practice in 'real time', say it out loud. To the mirror, to your DP, to the cat, the baby, whoever.
Only use technology if you're absolutely certain that your laptop will talk to their projector/your disc will work in their laptop etc etc. There's nothing worse than you and panel members having to crawl under the desk trying to work out which cable is the offending trouble-maker. And the trailing-edge technology approach can be quirky and interesting - some of the best presentations I've seen have used cardboard and balloons (although I'd think twice about the magic tricks if you're going for law partnership...)
Style is important, but substance and clarity more so. Unless you're applying to be a powerpoint demonstrator, keep visuals simple, the message strong and the language crystal clear. In my experience if you try to second guess what you imagine they want to hear, you'll trip up. Ditch the buzz words and make sure that every single blooming sentence actually means something. Some of the bollocks I've had to sit through has made me so mad I've had to physically restrain myself from leaping up and yelling 'but what are you actually doing to do you dozy bint'.
Depending on the job (can you say what it is, btw?) take a punt on being a teensy bit edgy. They might be looking for someone to give the job/department/company a kick up the arse, in which case arse-licking won't get you anything except, perhaps, a kick in the face from the person who does get the job.
Hmm. I think maybe I've had too much diet coke this evening...