There's a tiny clip of a Corsair JATO carrier take-off about a minute and a half into the following film:
(EDIT: Link removed, no hotlinks allowed)
(Uh, go to
http://www.ww2incolor.com" onclick="window.open(this.href);return false; and then 'Image Gallery'. You'll find a section called 'ww2 movies in color' at the bottom. Download the film 'To the shores of Iwo Jima' for the JATO bit, and check the rest out as they're superb - especially the P-47 one!)
Check out the root site, WW2 in color - I think it's been posted here before but in case anyone missed it, it's an incredible repository of full colour (or 'color'

) photos and films from, you guessed it, WW2.
Willie, did you ever hear about that Darwin Award winner, a former Air Force officer, who 'comandeered' a JATO rocket and strapped it onto his car out on a long stretch of road in Death Valley? His car actually
took off before crashing into a cliff face 100ft up!