People flocked to the East Hampton home of NBC Producer Angela LaGreca this past weekend, where Liza Minnelli sold a bundle of her possessions, including wine glasses and lampshades. The sale was sparked by an Dan’s Papers blind ad that read, “a truckload of celebrity-owned items . . . don’t bother coming early, entertainers sleep in.” Joy Behar was among those seen rifling through Minnelli’s old stuff.