Bakemono, Nezumi, and Tasloi all make for good fodder monsters in Oriental Adventures. In my campaign (http://www.geocities.com/xagunder/Namidano_Campaign.pdf) I have used hobgoblins, bakemono, and human samurai with the corrupted template (from BoVD) as the major fodder monsters for my begining, low-, and mid-level PCs, respectively.