There was a giant LCD billboard outside my window in Baltimore. Though it was quite some distance away, at night it shone into my window like a nighttime Sun. Destroyed the otherwise lovely view of Baltimore Penn Station, not to mention required pulling the blinds to be able to sleep.
There aren't many LCD billboards here (Dublin, Ireland). The few that I've seen are reasonably small and generally used for stuff like how many parking spaces are free in the city centre.
But I despise the things, especially if they change what they're displaying (ie movement or flicker). The number of of times that they switched from dark to blindingly-bright almost causing an accident is shocking. I'm surprised that nobody has been seriously injured because of this (that I know of).