Backup to NTFS Drive?

Just some info about my hard drive setup. I have a 150GB WD Raptor X as my boot drive with partitions for Ubuntu and Windows. I have 500GB hard drive for my home partition (mainly to keep my movie and music collections since the Raptor is too small) and I also have an external 500GB hard drive (eSATA for what it's worth) formatted NTFS, because I use it both on Ubuntu and the rare boots into Windows, and I'd like to be able to backup some of my folders to it, ideally automatically. I've looked at rsync and am not sure where to start with it, or if I should use something else. When I buy movies or music, I usually rip them and never use the disc again, so I'd like to have a folder on my external drive mirror my /home/*/Videos folder, either right after a rip or a midnight folder sync or something. What would be a good way to go about backing up like that? I'd be willing to format my external to ext3 if need be.