As Batman villains go, The Scarecrow is is full-on horror movie material. If you take his depiction in the Arkham games especially, the guy can get pretty scary. But feature him on a kids show and you're limited to . . . pretty much a literal scarecrow, with straw and everything. This is why 'Nothing to Fear' relies primarily on the writing, which is what makes this so effective. The bad guy, gangly and harmless, gets at Batman psychologically. Bruce is forced to conquer his inner fears (particularly those of failure and it results in one of the show's great lines: "I am vengeance. I am the night. I am Batman!"
There's a big zeppelin fight, but otherwise nothing flashy. Yet, it's still a great character story and well-executed, at that.
7/10