remote list of changed files

Is there a way of getting rsync to just list what it would do without doing anything? Failing that is there any other way to get a list of changes between two trees of files where one of them is remote? I've got an archive of 30G+ of video files that needs to be synchronised occasionally with a system that has limited quota. I want to get a list of new/changed files that I can pass as parameters to tar and then take a tar file on a USB stick with the new files. I know I could run "find ." on both sides and then compare the output files, but I'd prefer something less hacky if possible. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/