Of course I'm a fanboy of my home course but Ventura_Tom did an amazing job with our signs. I really like that they have a P.O.V. photo of the holes and trajectory arrows.
I've never seen signs like that, I have to say that is a great idea, I really like those.
At Idlewild...we recently replaced all our tee signs with these: http://www.houckdesign.com/platinum_tee_signs.html
They look very good in person with large sponsor boxes as well.
It's been a while since I've played Idlewild, I need to make it back up that way soon. Like the signs on the link, I bet those look great on the course!