Originally Posted by Squark
The oil filter housing gasket and valve cover gasket are fairly common places for leaks. You should be able to see both from the top of the engine with a flashlight.
Yes, this is very common. Depending on the excessiveness of the leak, it may or may not drip. A common way to tell if you have a VCG leak is by smelling burnt oil in the air vents.
Also, if your daughters A/C was on for a while you can expect water from under your car.