Based on the book by David Shenk, this PBS documentary examines the history, latest findings, and other information on the disease that affects nearly five million Americans, robbing them of their memories, their identities and, ultimately, their lives. Along with compassionate interviews with families coping with Alzheimer's, practical health care tips are offered. David Hyde Pierce hosts. 90 min. Widescreen (Enhanced); Soundtracks: English Dolby Digital stereo, Spanish Dolby Digital stereo; Subtitles: Spanish; interviews.