i wish canon would get off their but and implement the multi exposure option.
or atleast have a panaramic option which would show you an overlay of the previous image so you could line it up.

i am not saying do all the stitching in camera, but just allow 3-6 consecutive images, which shows an overlay on the lcd of the previous image so you can line it up.

but Nikon has the multiexposure where it overlay's multiple shots on top of each other. and this has some uses also. wish canon would do that also.
heck even the oly PEN cameras allow for 2 consecutive images/shots overlayed.

multi exposure (same shot 2-3 shots on the same image/film) is as old of a photographic process/trick as photography itself. and i have always been shocked canon doesn't use it.