10. Jeremy Piven
Looks like actor Jeremy Piven took his role as Ari Gold in the hit series Entourage, a little too seriously. Due to his recent behavior, it’s pretty clear that Piven has used some of his entitled and obnoxious behavior from real life to make the character of Ari more believable. While in Aspen for a comedy festival, Piven allegedly behaved so terribly that the manager at Nobu asked him to leave and never come back. Nobu is known for welcoming celebrities who love sushi, so this was likely pretty embarrassing for Piven. His ego was so bruised that he left an Entrouage DVD as a tip and left the restaurant after saying, “thanks for nothing.” Classic Ari Gold.