Nice set lighting & shooting workshop at NAB 2012 by Bill Holshevnikoff who has been lighting and shooting award-winning broadcast, corporate and documentary programming for over 20 years. Bill talked about some recent experiences using LEDs and his approach to creating a naturalistic look for lighting sets, products and people.
Please see ARRI for more on their lighting solutions.
Also seek out Bill Holshevnikoff for more on his lighting guru ways.