Rod Blagojevich Superstar!<br> Review By STEVEN OXMAN
Combining the disgraced governor's grandiosity with the musical flavors of '70s rock operas like Andrew Lloyd Webber's "Jesus Christ Superstar," the show probably has a limited audience of political junkies and a pretty short shelf life. But as an offshoot of the Obama storyline, with the potential of a trial to keep the story alive, this brief and breezy show may turn out to have greater legs than Roland Burris' sen…