Well there's this on e-bay.
http://cgi.ebay.com/Wire-Stripping-...pper_W0QQitemZ160243988303QQcmdZViewItemKinda pricey just to strip some wire for a one time use, but if you do it frequently it could pay for itself in time saved.
Of course this is a little better priced.
The Wire Zipper:
http://www.thewirezipper.com/features.htmLooks like it would be fast.
I have never used either of these methods. Just found them thru a search and they looked to be good options.