Everyone can do that, if you want to waste the money for it.
What's even more frustrating: the people you see there, making such overclocks, they lap the underside of the copper pipe just by hand instead of on a flat surface, they dont even lap the cpu, they put a huge heap of thermal compound on the cpu and then mount the thing on, right on the big heap of compond,....
That are the skills/knowlegde of the people that do such overclocks and get in the spotlight