Barbaccios are an exercise where you bring the barbell up from a hang position and explode forward when the weight reaches shoulder height. It was something I saw demonstrated a while back and started to mess around with. Now, however, I would not advise pitchers to do the exercise. The possibility for injury is too high to justify possible gains.
Substitute pullups for the barbaccios.
One arm db snatch looks like this: http://www.youtube.com/watch?v=hxX2pp-PySU