Keeping the Faith ABC's Bill Diehl reviews Diane Lane and "Unfaithful." ent_mov_lane_diane_unfaith.jpg G0 video.gif rtsp://start.real.com/rd?pid=abcchan&url=020509diehl.rm&rpcontexturl=abcnews.go.com/webcasts/realone/bd_panel.html&rpcontextwidth=460&rpcontextheight=180&rpurl=abcnews.go.com/sections/entertainment/ abcnews.gif rtsp://start.real.com/rd?pid=abcchan&url=020509diehl.rm&rpcontexturl=abcnews.go.com/webcasts/realone/bd_panel.html&rpcontextwidth=460&rpcontextheight=180&rpurl=abcnews.go.com/sections/entertainment/ PLAY headline