The Euthyphro Dilemma goes something like this:
Is something good because God commands it, or does God command something because it's good?
If something is good because God commands it, then anything at all could be "good".
If God commands something because it is good, then God is not the source of morality; he is merely the messenger.
The bulk of this video is from SisyphusRedeemed's video, "Euthyphro's Trilemma".
SisyphusRedeemed is a professional philosopher, and a kickass YouTuber.
http://www.youtube.com/user/SisyphusRedeemed
And in case you're wondering, I voted for Jill Stein (Green Party) for President.