Twilio showcased several innovative applications during the TechCrunch Disrupt Hackathon Demos, including Groop.ly, a group chat app that uses Twilio SMS integration for users with or without smartphones, and FBCall, an app that reads out Facebook wall posts to users over phone calls. Another notable project was AudioPost, which allows users to update their Facebook walls by calling in and embedding audio files directly into the post. A team from NYC Resistor created Mr.Stabby, a pneumatic robot with a Twilio-powered IVR that controlled its movements during the hackathon demo. These projects demonstrate the versatility of Twilio's voice and SMS APIs, providing developers with opportunities to build engaging communication experiences.