Something I've been waiting for is here finally. Either I didn't know how to do this in Tiger or this is a new feature. If you select multiple files and and hold down option and drag them, it will move all the files. Tiger behavior doing the same thing only moved the first file selected.
Hmm. I never press "option" when I do this Tiger. I simply select several files and drag them around (they all move). They will all also respond to spring folders, trash, etc.