Did Entourage jump the shark?

Does it seem like the storylines in Entourage have been going around in circles? They've been trying to get Medeian (not sure how to spell it) for almost two seasons now, they dropped Ari, picked up Amanda as an agent, dropped Amanda and as of now they're back with Ari and still haven't done a movie in forever. I find that the only reason that I'm watching anymore is to see what celebrities make guest appearances and to see what girl Vince is banging this week...