Doppelganger

Dictionary.reference.com provides the following definition for doppelganger: doppelganger \\DOPP-ul-gang-er\\, noun: A spiritual or ghostly double or counterpart; esp., an apparitional double of a living person; a cowalker.

     To readers of science fiction, the idea of a single atom existing
     simultaneously in two states or places is reminiscent of the
     supernatural "doppelganger" -- a flesh-and-blood duplicate of one's
     self encountered while walking along a street. 
     "Physicists Put Atom in Two Places at Once," New York Times, May 28, 1996

     But my primary interest here is not the machinations of science itself
     but the fascinating life and times of its dark doppelganger, the mad
     scientist, in all his overreaching glory. 
     David J. Skal, Screams of Reason: Mad Science and Modern Culture

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Doppelganger is from the German: doppel, double + Gänger, goer. The correct pronunciation can be heard by viewing the following web reference:

      http://dictionary.reference.com/help/ahd4/pronkey.html.

dop·pel·gäng·er or dop·pel·gang·er((dpl-gngr-gng-) n.

      A ghostly double of a living person, especially one that haunts
      its fleshly counterpart.

[German, a double : doppel, double (from French double. See double) + Gänger, goer (from Gang, a going, from Middle High German ganc, from Old High German).]

Doppelgängers also appear in some role-playing games and are a type of shapeshifter that mimics the creature that it is shadowing.

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Doppelgänger is also the title of a 1983 album by rock band Daniel Amos, released on Alarma! Records.

Doppelganger was a much more darker, haunting album than the album that preceded it, Alarma. The album starts with the eerie backward sounds of "Hollow Man" (inspired by T. S. Eliot's poem, The Hollow Men). Taylor's lyrics to "I Didn't Build it For Me" and "New Car" were sharp attacks on televangelists, that actually predate the Jimmy Swaggart/Jim Bakker/Robert Tilton scandals by nearly a decade.

Doppelganger was the second of a four part series of albums by DA entitled The Alarma! Chronicles, which also included the albums Alarma, Vox Humana, and Fearful Symmetry. The band raised eyebrows on the tour that followed each release, by presenting a full miltimedia event complete with video screens sychronized to the music, something that was unusual in the early 1980s for any band.

In 1983, DA was Terry Scott Taylor on rhythm guitars and lead vocals, Jerry Chamberlain on lead guitars and vocals, Tim Chandler on bass guitar, and Ed McTaggart on drums.

Side One:

1. "Hollow Man" (Taylor)
2. "Mall (All Over The World)" (Taylor)
3. "Real Girls" (Taylor/Chamberlain)
4. "New Car!" (Taylor)
5. "Do Big Boys Cry" (Taylor)
6. "Youth With A Machine" (Taylor)
7. "The Double" (Taylor)
8. "Distance and Direction" (Taylor)

Side Two:

1. "Memory Lane" (Taylor)
2. "Angels Tuck You In" (Taylor)
3. "Little Crosses" (Chamberlain)
4. "Autographs for the Sick" (Words by Taylor, Music by Taylor/Chamberlain/Chandler)
5. "I Didn't Build It For Me" (Words by Taylor, Music by Taylor/Chamberlain)
6. "Here I Am" (Taylor)
7. "Hollow Man (Reprise)" (Taylor)

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Doppelgänger aka Journey to the Far Side of the Sun is also a science fiction movie produced by Gerry Anderson.

Full details to follow