Voice Studio - 50 free gamerscore

If you have a Kinect and want to help Microsoft improve the voice recognition, you can download an app called Voice Studio that will give you 50 gamerscore and 4 avatar awards if you run all 8 "tracks".  It is boring, but it does kind of give hints that they want to make Kinect a lot smarter, more like Siri, I think. 

By the 8th track, you have to say 100 phrases, but for free gamerscore and kinda ugly avatar awards, I did it.  Actually I kind of like the t-shirts.

https://live.xbox.com/en-US/Activity/Details?titleId=1481115744

(I couldn't find a link to add it to your queue...I think you have to search for it on the xbox itself.)