Originally Posted by Deth Muncher
Check out the Oriental Adventures book, if you haven't, since there's fun flavorful monk-stuff in there.
Also, possibly grab the feat Improved Unarmed Strike from Tome of Battle. And maybe the feat that lets you grab a maneuver, like maybe one of the low level Shadow Hand ones that lets you flash step? (Or Dimension Door, for those that prefer that terminology.)
Superior unarmed strike, you mean.
Shadow Jaunt (via martial study) is worth a feat, but it's use is limited being a standard action to activate. Shadow stride will come online awfully late and shadow blink is out for being too high a level, you couldn't take it before epic. I'd suggest one of the gem nightmare blade strikes from diamond mind. Concentration check to multiply damage when monks get concentration as a class skill? Yes please.