So what is the star of pay-TV original series doing in a blog about a magazine industry annual conference? Michael C. Hall, the star of Showtime's acclaimed dramatic series "Dexter," which has its third season debut Sept. 28, will in fact be appearing at AMC on Sunday, Oct. 5. Here's the hook. To lure viewers for the show's premiere, Showtime is running full-page ads in about 12 magazines. The ads look very similar to the covers of the magazines they're in. Today's New York Times advertising column has a long story describing the unusual advertising buy. As writer Stuart Elliott notes, "Every coverlike ad depicts the actor Michael C. Hall in character as Dexter Morgan, a serial killer who kills other killers. The name of the series replaces the name of each magazine and is printed in the style of the magazine name. For instance, GQ becomes DQ (Dexter Quarterly)...The New Yorker becomes New Dexter, with a drawing of Mr. Hall by Edward Sorel, an artist who draws covers for The New Yorker." Hall, who also starred in HBO's "Six Feet Under," will take to the AMC stage and discuss the new season, his character's development, and his experiences with magazine covers (hopefully all positive and wonderful!). Showtime's CEO Matt Blank will also appear and reveal how the deal was put together and why the company decided to use magazines as a vehicle to promote the program.