>If I wasn't so lazy, I'd go look up the reference to some famous building that I think is in Washington DC that exhibits an effect like this--someone standing at one end of the room can hear others at the other end whispering if both parties stand in the correct place--over a distance that normally you could never hear a whisper over.

and this is what your friendly neighborhood unipeg is for. that famous building would be the capitol, and the specific room would be the rotunda (i think). there's some whole thing about congressmen that could hear each other from those specific spots, but i'm not sure exactly.

uni"make that spot one of our rinktour stops, Sam!"peg