That's a very annoying question that always puts me off. It's not even a question, it's an invitation to tell them your life story.
I think the best answer would be something to what George Costanza did: youtube.com/watch?v=s8WbxUZbOPQ.
But seriously, I just reply now with "Ok, what would you like to know?".
This is exactly my point in this article though. You shouldn’t be telling your life story. You should be crafting an answer that will set the interview out on the right foot and leave a memorable impression.
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