SketchUp is one of my favorite drawing program because it gets rid of the problem with perspective. Many design students, including myself when I was a student, can not master perspective. Sketchup, in my opinion, is the drafting board for Set Design 101. Teaching Stage Carpentry at Purchase College inspired me to create an interactive iBook that takes you through the process of drawing and lighting a complete set with all the construction detail in the model.
Setting up scenes for quick navigation is great for doing live demonstrations in a meeting or sending a mp4 animation to a client for review.