Sorry for jumping in so late, but after re-reading your messages I wanted to add a comment.
It seems that the trouble you are having with the touch lamp fixture is that it will not dim or turn off when it's touched [the metal frame of the fixture], and obviously this is why you wanted a touch lamp in the first place!
The problem is not with the Incandescent Lamp [the bulb], but with the fixture it's self. The touch sensitive controlling circuit is not sensing your touch, which is why you need to unplug the fixture in order to turn it off. Does it go on with a touch, but not off?? If this is the case, return it for a new one, as the control circuit needs to be messed with. If it comes on when it's plugged in without being turned on with a touch to the frame, and stays on even when touched again, this would be something simple to fix [possibly].
If you can return the fixture for an exchange, do that - see if you can test the new one before leaving the store.
If it's too late to return it for exchange, you can have it checked out, or if you are handy with appliances, check it your self. It seems that the touch sensor wire from the circuit board has come loose. It will most likely be inside the lamp base. Look for a wire coming off the circuit board that is supposed to be soldered or somehow connected to the metal frame of the fixture. Reattach it and the thing should work properly.
Be sure to unplug the fixture before doing these things