While the cool kids are getting all electrofreaky downtown for Pretty Lights, the Rock Block has something a tad dorkier in store for Halloween. Co-headlined by Japanese superhero punks Peelander-Z and local robot rock outfit The Protomen, A Nightmare on Elliston St. at Exit/In is the best place in town to debut that Game of Thrones costume you've been working so hard on. (Don't forget the bloody severed head of your favorite fantasy monarch!) Along for the ride is noted nerdcore apostle MC Frontalot, a rapper from Brooklyn who probably has a song about the Konami Code. Meanwhile, across the street at The End, Someone Still Love You Boris Yeltsin returns to Nashville for another round of power pop in the tune of Pinkerton (or, in other words, charmingly geeky) with support from Evan P. Donohue, Faux Ferocious and Blown Stag. Either way, you can't lose — unless you decide to be that guy who doesn’t wear a costume. Don't be that guy, guy.