[viraptor]

That's true, friends/Monica was the first that came to my mind. But then I started thinking about other friends-like shows and I'm surprised how much this does not affect HIMYM - there are some traits that become slightly more visible, but they're "real" and everyone seems actually aware of them. For example Joey gets stupid-slutty for cheap comedy, but Barney gets slightly more slutty and it's actually part of the story.