Meet Lighty: a robotic laser projector that rotates, tilts, and self-adjusts to better serve you. It lets you watch movies on the ceiling or any of your walls. It can play video for up to 5 hours on battery. You also get internet radio for 10 hours. Want to use the device for presentation? No problem.
You can interact with Lighty using a Leap Motion Controller. It has WiFi/Bluetooth and voice recognition. More information is available here.