Pacific Dunes - I could talk about just any hole, but since most of my favorites have been discussed, I'll have a go at #13. I have a painting of this one hanging in my house, and I think it is a wonderful intersection of pure eye candy, and great golf architecture.
It is appealing enough that I could just stare at it for hours on end, but when you start thinking about the strategy is when I really wish I could shape or position a shot. I've only played the hole in the summer, so the wind is usually coming at me.
You are faced with blown out dunes on the right that are so bold and spectacular that the ocean side of the fairway doesn't seem like a bad option to challenge. The fairway is generous, and there's plenty of room out there. Miss badly in either direction, and you won't be rewarded. Missing left all but eliminates par from the equation, but I think the left side of the fairway provides the better approach to the green. Missing right still allows a chance at par (speaking from experience) but leaves a difficult second shot that might need to both carry bunkers and take a line that could leave your approach in the ocean if hit too far. I really like the back pin position, which allows for you to run the ball back with a lower shot since there's a good chance you are playing a hybrid or longer iron in during the summer. At the same time, the green really narrows up back there and makes you consider playing to the fat part of the green and attempting a longer putt or going aggressively at it and bringing the hazards into play. As a bonus, you get a nice view of the Sheep Ranch from the back edge of the green.
Ballyneal - I'm still trying to figure out my favorite hole out there. I really like #2, #5, #7, #8, #13, and #18. That list changes daily, but #2, #7, and #13 have been on it just about every day. I've written enough about all of the holes on the Ballyneal thread that I won't bore anyone here.