Just a day after releasing the trailer for one of their most anticipated movies of 2009 (see the new WATCHMEN trailer here), Warner Bros. has released the trailer for another one of their most anticipated movies from 2009. Set to hit theaters next week attached to prints of TWILIGHT, the new trailer for HARRY POTTER AND THE HALF-BLOOD PRINCE is online now. I’m not much of a POTTER fan so I won’t pass much judgment but it looks pretty good to me. What are you guys thinking?…