Years ago we built what we jokingly called a "light canon". It had 504 very tightly packed 1 Watt RGB LEDs for a total of 1512 W. This thing was so bright it was actually dangerous to look at directly. Truly scary amounts of light.

That project then evolved into something else. Still, I have the prototype off in a corner of our R&D shop. Every time I look at it I think about adding a Fresnel lens in front of it. One day...