Installing an LCD TV on the ceiling in your condo vestibule is a unique idea for showcasing the view from your security camera. Having the TV on all the time to display the view from the camera is a great way to keep an eye on your surroundings and ensure the security of your property. However, it's important to consider a few things before installing the TV, such as the size of the TV and how it will be mounted securely to the ceiling. Additionally, you may want to consider adding a timer or motion sensor to turn off the TV when no one is in the vestibule to conserve energy. Overall, it sounds like a great idea that could add an extra layer of security to your condo.