After their impressive presentation at Live 8 some years ago, to have'em together again and to have a new concert, maybe in Blu, will make me very very happy.
But I wouldn't be that excited about it. Waters and Mason are supposedly on board, but Gilmour is the one who has stated that he's not interested in going "back to that old thing".
A shame that it will happen (if ever) until 2009. Nor US or THEM are getting younger, you know...