Yes, I am one (as several above) who finds many of the current 'fads' incredibly superficial. BUT, these mega churches are having a positive introductory impact on their communities, successfully inviting thousands to "meet the Master." It is my sense that many (most) of these converts will move on to 'more meat' after a couple of years in these largely formulaic megachurches. But they are the functional equivalent to a semi-permanent Billy Graham Crusade for our time. And I think that, viewed as such, it is a good thing.
I belonged to one of these megachurches for about three years and found that, in the leadership of the church, the greatest continuing frustration was the inability to 'bridge' or 'grow' their huge (really huge) coterie of young believers into mature Christians. Most were moving on to other, more traditional churches after 2-4 years. And that too is a good thing.