With The CW’s big crossover event series, Crisis on Infinite Earths just three days away, the network released a trailer today for something a bit different. DC’s Legends of Tomorrow also stars Brandon Routh, but in a capacity entirely other. He’s not Clark Kent/Superman here, but someone a little closer to home. In the trailer, we’re treated to some misdirection, some self-aware humor, and ever welcome Tommy guns. But best of all, capitalizing on the current popularity of Mister Rogers, thanks to A Beautiful Day in the Neighborhood (though that man ought to be …