Not half bad, I'd say. They're unlike most other gaming shows in that they don't tend towards one format or just the big titles, which I like.
I hear all about the mainstream through the various sites I frequent, I don't need to hear more about them. Plus those three are more standable than the clearly scripted retards that host the vastest majority of other shows, most likely hired only for their pretty faces and acting ability. Game.tv on bravo is a good example of this; it gives steaming good reviews to pretty much every game it looks at, so there's no standard for what's good or bad. Critics are meant to be strict.
As for the whole awkwardness of Yahtzee, well, he'll settle into it, he seemed to be startled by the cameras or something, but he seemed much more relaxed by the end of the show, so hopefully the trend will continue.