Sports events are the most prominent example. Going to popular sports matches in the US: football, ice hockey, basketball, etc. and you'll be bombarded with ads, noise, hype from the loudspeakers and flashing lights from the huge screens -- every single second you're there. When you watch the Super Bowl, you watch more ads than you watch the game. Going to a soccer game which is the most popular sport outside of the US, the only sound you'll ever hear is when the fans actually make noise. And perhaps, the announcement when they substitute players. By the way, it's quite cool to be in a high-stakes soccer match: There are volunteering leaders emerging from the crowd that orchestrate the people naturally. Noise in sports events are great, but only when they are not from the stupid flashing screens.
It's not a surprise to me that the laugh tracks were invented in America. Their presence in modern American sitcoms is annoying at best. But now, I think the producers started to realize that.
I think we are happier when we're treated like adults who know how to feel and behave.