I know this is an old thread, but I was pointed to a .bat file that very quickly shoves file's into folder's, you can get it here:
All you do is shove it in a folder full of however many avi's/iso's etc.... you have, double click it and it will create, name (based on file name) and place the file's in the folders in a matter of seconds.
It has been invaluable for me with endless rips of my tv dvd's after using theRenamer:
to rename the episode's before hand.
These two save so much time and hassle and create the folder's just nice for working in programs such as thumbgen:
Though I'm sure you lot already know about those little gem's, but some new comer's may find it helpful having them all in one place