Thanks 005 & Ripplin.
Ripplin, the first flames actually come out as the chin hits the floor, as the chin bends the neck back, but i admit it needs work. I think I may have added the follow up flames too soon after the neck snaps making it look like an overall explosion.
It is a bit messy, i may have another attempt. It was only a rush job as i was mainly trying to work out deinterlacing issues, but wanted to see if it worked with a filmstrip file in photoshop. Wish I could get hold of some 720p or full dvd footage to play with.
Thanks for your support guys. :-)