One of my favorite things about interviewing people for a new position is asking them, "What industry or company do you think is the next big thing, and why?" While interviewing at Kellogg, very, very few potential employers asked me this question. I wish they would have cause I would have given them an earful. One of the reasons I interned at Becton Dickinson is cause Jim Down actually asked that question. It was a great indication of what was important to him and it worked out really well. He's one of my favorite bosses ever.
Anywhoo, I've been interviewing some folks lately and the most creative answer I got was Potenco. It's a mobile power generator. You pull a string and it builds up electricity. It can be used to power mobile phones or computers in really tough environments.
Great idea that could change a lot of lives.