Re: Ré causing, not curing chaos
I've used the simple resistor/capacitor drop method successfully. Great for low-current stuff like a PIR but no good at all for anything higher current. But where it works its simple, cheap, and more efficient than you'd think.
The circuit I disapprove of most are the touch-switch lamps which use a 0.5p resistor to isolate you from the mains. Yeah, really safe.