For the Intellectuals:
Yeah.  I know.  EMDR is weird, far out there, and really hard to explain AND it is backed up by science and research.  Please indulge yourself by perusing some of the research and helpful, accurate websites.  Enjoy!

Two studies (Lee, Gavriel, Drummond, Richards, & Greenwald, 2002; Rothbaum, 1997) have indicated an elimination of diagnosis of posttraumatic stress disorder (PTSD) in 83-90% of civilian participants after four to seven sessions. Other studies using participants with PTSD (e.g. Ironson, Freund, Strauss, & Williams, 2002; Scheck, Schaeffer, & Gillette, 1998; S. A. Wilson, Becker, & Tinker, 1995) have found significant decreases in a wide range of symptoms after three-four sessions. The only study (Carlson, Chemtob, Rusnak, Hedlund, & Muraoka, 1998) of combat veterans to address the multiple traumas of this population reported that 12 sessions of treatment resulted in a 77% elimination of PTSD. Clients with multiple traumas and/or complex histories of childhood abuse, neglect, and poor attachment may require more extensive therapy, including substantial preparatory work in phase two of EMDR (Korn & Leeds, 2002; Maxfield & Hyer, 2002; Shapiro, 2001).