Lets us clear up a few misconceptions about static:
The reason that you are grounded when you touch your case is not because it is hooked to the ground in your house, but because of the metal in the case. There is enough in it to dissipate the static from you. The same is with a car. The metal in the frame is enough to dissipate the electricity from soemthing. That is why in a lightning storm you are "safe" in a car. not because of the tires, you would need about a mile of rubber for you to be safe because of them, but it is the metal frame. For the most part, the millions of volts from a lightning bolt would dissipate in the metal.
CRT's hold their charge for 2 weeks or so, not 30 minutes. And it is not the CRT, but the capacitors inside them that hold the charge. Those are mighty big capacitors, perfectly capable of killing a human being. There are ways of discharging those capacitors so they are safe to work with, but it is not advisable for the average joe. The same with TV's, the capacitors in them are the deadly parts. Also the same with a PSU, which is why it is never advisable to take one of those apart.
Like has already been stated, it is not voltage that kills you, it is amperes. .1 amp can knock you unconcious, while .2 can render you dead. Obviously it will differ from person to person, depending on body mass and the amount of voltage pushing them, among many other variables.