I'd go with Sam as Captain Metropolis-I mean, he pretty much is Sam in the Crimebusters flashback. But I want Gonzo as Manhattan (if for no other reason that that the Spectre-Dr. M scenes aren't half as funny with Beaker). So that leaves Rorschach open for somebody who has a better dynamic with Kermit than Gonzo. That means Scooter or Rolph, and Rolph works better as Hollis Mason...