experiment with curves and levels; it is fun and you could easily get cool results... I also desaturate about -20 to -40 (that is individual taste though)
if you want Robert Richardson photo style just add some glow and set the treshold to about 80-90% so that it only affects the highligts and set the transfer mode to screen and select a/b colors and you'll hopefullt end up with something similar to a JFK, Kill Bill look... (you should also experiment a little with intensity and radius so that you get an subtle effect)