its called "this weapon is your life" i think & it's basically a short 3-5 minute behind the scenes show of the weapons being made for Ep3, in it they show some of the Wookie Bowcasters & other larger Wookie guns (they look like heavy cannons to me) so the Wookie close ups might look a bit hmmmmmmmmmm to start with but seeing them on film in the heat of action (hopefully pulling Clones arms out of their sockets) MIGHT look pretty cooool.....ya never know....
BTW I shall keep my time honoured PT tradition of going to see the movie thinking it will suck balls & see if im pleasantly surprised but not before revelling like a 3 yr old at all the trailers that are just soooo much coooler than the movie itself!