I Was Wrong, but So Were You - Parsing Bush's new mantra. By Fred Kaplan is well worth the read. Point by point Kaplan walks through a recent Bush speech and exposes the fundamental lies in point by point detail.
Why such a pathetic attempt at deception? My guess is Bush long ago gave up on talking to anyone who might doubt him, now he's just fighting to keep his base intact. Their credulity is well understood.