CryptoKitties - Breed and collect adorable creatures using Ethereum
Crypto Price Widget - Tracks your favorite cryptocurrencies
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain
All or Nothing - Competitive donations for causes you care about.
Cryptocats - Cute little 8-bit cats on the Ethereum Blockchain
Drinkable - Drinkable is an app which help you find cocktails that you could make today with ingredients from home.