I spent most of this evening writing my first exam of the semester ... whee. I refuse to give only multiple choice exams in my classes, so much thought had to be put into which essay questions I could ask of my 180 students yet still retain my sanity post-grading. I think I've got a few good questions, but who knows. If you're curious, this exam ended up being about 60% multiple choice to 40% essay (based on points assigned).
All this exam writing has reminded me why I completely agree with Pharyngula's take on exams.