ok, here's the experiment bit:
I wanted to see how affective the anti-ghosting features are in Photomatix as it's one setting I've never tried. I took the usual 3 exposures 0 / -2 / 2 with lot's of movement from one frame to the next of the model. Without this option checked you could clearly see the model 'ghosted' in different positions.
With the option checked to remove ghosting I was pleasantly surprised at how well it removed the ghosting. I was left with approx. a 2 to 3 pixel outline from one of the shots. Very simple to remove with photoshop.
The align source images option was also used as I didn't have a tripod with me and there was a little camera movement.
Camera: Canon EOS 450D
Exposure: 0.02 sec (1/49)
Focal Length: 10 mm
ISO Speed: 100
Noiseware Community Edition
Photoshop CS3: Auto-Levels / Auto-Colour / Colour Balance Adjustment / Ghosting Correction - manual touchup from 0EV exposure / Orton Effect