Brian Silva built a pretty devilish uphill redan at GreatHorse in Western MA. This year during the Mass Mid-Am, it played as the most difficult hole in round 2 (3.75 average) when the pin was front left just over the bunker.
I'd argue the slope of the front of the green is too severe for the speed that the greens were at during the tournament, but that seems to be the subject of another thread.