I can't drag and drop movies from my hard drive onto my iPad.

I just recently upgraded from an iPad to an iPad 2. I still have the old iPad. I have no problem dragging and dropping movies and TV shows from my external hard drive onto my old iPad, but I can't seem to do it with the iPad 2. It syncs movies and TV shows from iTunes, but I don't want to have to load everything into iTunes just to get it onto my iPad. Again, no problems doing it with the old iPad. Any suggestions? Thanks in advance.