EthOnline is EthGlobal’s biggest event of the year and has over $350,000 in prizes.
The homepage says:
All over the world, hundreds of thousands of developers, users, hobbyists, creators, artists, and market makers spend their days and nights thinking, building, talking about Ethereum because we are… excited. We’re excited by the idea that Ethereum can change things. That Ethereum is a fulcrum we can use to change money, finance, the web, the way software works and the way power is distributed. This September, we invite you to come learn what all the talk is about.
Check the schedule out, there’s something for everyone.
Don’t say you weren’t invited! 
