This Friday night, my local art house movie theater is debuting the Buffy Musical Sing-Along. I am thrilled to the tips of my little pink toes. I understand this has grown to near Rocky Horror Picture Show proportions, and I've also heard that I get to shout rude things at Dawn, both of which please me equally.Have any of you been to the Buffy Sing-Along? What can I expect? Should I wear a helmet of any sort? And most importantly, should I bring my action figures?