This page provides a sample of how GAC works with 3 Demo Showcases including Keyboard, Touch and InControl (using OnScreen buttons). These demos  show off some combos you can create using the GAC system. Also, they all use GAC's Hit Detection/Reaction and Animation movement features; you can use this to attack the punching bag and see it react based on the type of hit (Shoryuken and Backflip Kick plays a different damage animation for sandbag). 
GAC 3D Keyboard Demo