UPDATE: Ronnie Bincer of has pointed out to me that although Quicktime can be used to make high-quality recordings of your Google Plus Hangouts, the audio from the other people in the Hangout is not optimal (which I have confirmed). You can also use Quicktime to record from your iSight camera or any video camera connected to your Mac. Quicktime records in high or low quality, with or without sound. You can use Quicktime to record your Google Plus Hangouts, or anything else that you can watch on your screen (if you can see it, you can capture it).
So if you are a Mac owner, here is a list of tools that you already have that you can use to record Google Hangouts, edit videos, edit sound, and just about anything else you need to create some awesome Youtube videos.
