Included a hour long presentation to a group of interviewers. It displays your ability to communicate technical information. I enjoyed this aspect of the interview because it gave me control over a single portion of the interview. You can't control the other aspects of the interview.

First you start with a round of behavioral and get to know you questions. If selected to move on you will then have to give a technical presentation in which everyone from the department is invited and will grill you following your presentation. Overall a very standard process but hard to BS your way through it is you have no idea what you're talking about. Select a technical subject that you are able to defend and you will be fine.