This series lost its way in Season 6 -- I didn't even watch the 7th -- but the first few episodes of this finale actually come together well. My only problem is with the final episode. TV shows are notoriously difficult to end satisfactorily, but Entourage goes the extremely happy ending route, and it's just flat. It almost makes the entire series out to be mocking of regular people: you'll never have a life like this, where everyone gets what they want.
All good things... It looks as though sometime after season 7 the boys matured. I don't mean that in a bad way. It's just that you can't hit your 30s and remain naive or unaware of your surroundings. Turtle grew up the most and seemed (almost) like a different person. It was a good ending to an entertaining series.