That thing you heard about the CW keeping “Smallville” on the air for a ninth season?  That’s still true.  Yesterday TV Guide even had some exclusive casting news on the superhero series and, guess what?  It had nothing to do with who will be playing Zod.  The big news is that Brian Austin Green (late of Fox’s “Terminator: The Sarah Connor Chronicles” and Megan Fox’s pants) will join the series as Daily Planet writer John Corben - better known by the name used by his cyborg alter-ego: Metallo.  The kryptonite-powered Metallo will appear in at least the first two episodes of “Smallville”, which debuts on the CW network September 25^th at eight pm.  I will be the first to tell you that Brian Austin Green blew me away during his tenure on “TSCC”.  And while I don’t think that “Smallville” circa 2009 has the depth or range of Fox’s “Terminator” I am at least happy that Green held out for a better gig than “One Tree Hill”.  Oh yeah, because that show’s isn’t off the air yet either…