PIE from http://www.picmeta.com/ has a great lossless JPG rotator but
you need to pick which to rotate, and it does them as a batch -- and
also is very useful for digital cameras, which is why I use it.
ThumbsPlus will have a lossless rotator in the next version. There may
> Is there a piece of software which will analyze images and
> make a good
> guess as to which need rotating