If you haven't seen a camBLOCK... Well NAB is a great opportunity to see a demo and meet the inventor Stewart Mayer in person. The demos will be at the Hilton hotel attached to the south hall of the convention center, room 1702 Tuesday the 13th at 6:30pm and Wednesday the 14th at 6:30.
camBLOCKS are amazing tools for motion control and timelapse photography. I just used two axis on a music video and the results were wonderful. Go and check them out; you will be happy you did!