MINISERIES FINALE: This six-part spoof of classic TV miniseries, a miniseries in itself, concludes tonight, with a few final hairdos, a big explosive climax, and one last set of appearances by the story’s “auteur,” Eric Jonrosh, played so smarmily by Will Ferrell. Kristen Wiig, Tobey Maguire, Tim Robbins, Haley Joel Osment and Jessica Alba co-star.