Here's a video demonstrating a few martial applications from a form known as "feng mo gun" ("crazy demon staff"). This particular staff form from pigua-quan is indigenous to the city of Tianjin, and Zhou Jingxuan, the guy teaching it, is the the master I studied under when I was there. FENG MO GUN
I hope the guy who posted the video (an amazing Israeli who's been training with Mr.Zhou pretty much everyday for the past seven years and whose skill I really envy) will post a video of the full form soon. It's one COOL form.