In the WB hit's fourth episode of the season the same installment that will introduce Buffy baddy James Marsters as Brainiac  viewers will also meet Arthur Curry or, as I like to call him, Aquaman! The part has yet to be cast, but since Entourage's Vince Chase has already been hooked for a fictional big-screen version, maybe Smallville should consider slapping gills on his portrayer, Adrian Grenier.