Starbucks Virtual Barista
Barista is basically a voice-enabled alternative for anyone who uses the app to place their orders ahead of time. Instead of hunting through menus to pick the drinks and pastries you want, you just tell Barista and the order is placed automatically. The assistant can take orders as simple as a plain coffee or as complicated as a full meal, with special instructions like having the food heated or not, as well as variations on standard drinks.
Only 1,000 iOS beta testers at the moment. Everyone else should have it by the end of the year including Android.