 In 1986, the two formed a production company, Brillstein-Grey Entertainment, which packaged programming and managed talent.The new management company Eric Murphy joins in HBO's "Entourage" is based on Brillstein Entertainment, as well as the character Murray Berenson based on the company's founder Bernie Brillstein.Brillstein sold his shares in the company to Universal Pictures in 1996, giving Grey, his one time protégé, full rein over operations.