Maybe if Joe Johnston has a giant hit with "Captain America," he can convince Disney to let him take another shot at "The Rocketeer," the squeaky-clean crimefighter who was greenlit in the wake of the gargantuan success of Tim Burton's "Batman."  At the time, retro and sincere did not see like the right combination, but I think we've seen enough overly gritty and dark superhero movies, and maybe it's time for a little sunshine and optimism.  If Disney is looking to make a follow-up, may I suggest they contact "Cougar Town" creator Kevin Biegel, who would probably write that sequel for free.  Hell, he'd probably pay the studio for the opportunity.  And he would totally crush it.