The Crenshaw Cliffside course at the Barton Creek Resort in Austin has more fallaway greens than any course I have ever seen. On #s 1,2,3,4,6,9,12, and 16 the highest point of the green is at the front, falling away to the back, and there are a couple of other holes (#s 8,13) with greens sloping away at the front but banking up again in back.
This can make for some really tricky pins, especially on #16 when the pin is on the "car hood" section at the front of the green, with fallaways left, right, and long, and a downslope in front of the green. The only other such "car hood" green feature I've seen is at the downhill par-3 6th at Maxwell's Old Town Club in Winston-Salem, NC.