Wigfield: The Can-Do Town That Just May Not (Hyperion, $22.95) is a book for all those city mice who've longed for the wholesome simplicity of small-town life, but have no desire to waste their precious time between coke orgies visiting an actual small town. Of course, Wigfield, a Superfund Hooverville rotting in the shadow of a soon-to-be-demolished dam, is the opposite of actual. It exists only in the twisted imaginations of humorists Amy Sedaris, Paul Dinello, and The Daily Show's Stephen Colbert, who created the burg's vomitis personae in monologues and newspaper clips -- and then posed, in character, for gothically absurd Todd Oldham photographs. So yes, that's Colbert in fishnets, below, as Raven, one of Wigfield's many strippers: ''The scariest part is, when my brother Jay saw it, he asked me how I knew her.'' (To the right, Sedaris poses as Mae Ella; below, it's Colbert again as Donnie and Dinello as Ennis.) In the mockumentary spirit of the enterprise, we asked noted Wigfieldians to react to the book's publication.