Sunil Mittal. I have written about him on my blog before too. His last quote at the end of this interview is very very inspiring. http://www.timesnow.tv/Frankly-Speaking-with-Sunil-Mittal---Part-3/videoshow/4326576.cms
My previous posts on him:
http://pratikbhandari.blogspot.com/2006/03/sunil-mittal.html
http://pratikbhandari.blogspot.com/2006/04/more-on-sunil-mittal.html