This is probably one of the coolest things I have seen that has been inspired by the Joker. The Joker Rockband Guitar - Xbox 360. The guitar will work not only for Rockband 1 but also for Rockband 2. The guitar has a face of Joker along with his famous catch phrase ” Why So Serious ” written in a red bloody style. The guitar will come in the Rockband Joker guitar case which you can see in the picture below. It’s also said that a Joker guitar will be released for Guitar Hero World Tour so look out for that as well. The guitar is going for $350 right now in Ebay.