Yep, it's that dreaded question. I've got a PhD interview coming up in the next couple of weeks, and I'm sorry to start another Interview topic after some of the excellent ones already made... But this question scares the Bejeezus out of me!
What kind of things should you focus on? My social interests? My academic interests? I'd wager I should talk about my academic interests, what got me into what I'm interested in and why I want to continue studying it... But I'm not sure :s