His rep denies it, but Entourage star Adrian Grenier is said to be “shopping” rights to host his birthday party to various Hamptons hotspots: "He's been asking clubs for $50,000 for the honor,” a source told the New York Post. Grenier apparently knows how to put his celeb status to work: He reportedly charges $30,000 for shows by his band, the Honey Brothers. (More Entourage stories.)