Nast , Deborah Grumet , Eustace K. Tilley , Eustace Tilley , new yorker Wednesday, July 16, 2008 DR. HORRIBLE'S SING-ALONG BLOG , Act I Buffy fans, rejoice! Here's the latest from Joss Whedon & Company. This first episode runs 13:48, with things picking up around the 4 minute mark! I