Applicable States: Virginia
For a state that hasn't yet agreed to TEA-21 standards, Virginia has some seriously strict open container laws. Even an empty container of alcohol in the passenger portion of a vehicle can result in fines, the presumption being that it was full earlier and was consumed in the car.
Furthermore, if you exhibit behavior that makes the officer suspect you've been drinking, you can also be hit with a ticket, even if the alcohol in question is a bottle of wine that has been re-corked. The lesson here? Leave the booze behind.