He discovered Kelley after he read his script called "From the Hip" and brought him to Los Angeles to work on his first show L.A. Law.
Adelstein booked him to host Saturday Night Live and the show received the highest rating in 10 years.
He was subsequently put in the film The Mummy Returns where he received 5 million dollars for 5 minutes of screen time as The Scorpion King.
He also brought actress/writer Tina Fey to the agency as well as writers Bonnie and Terry Turner who went on to create 3rd Rock from the Sun and That '70s Show.
Adelstein has joined the advisory board of the Creative Community for Peace (CCFP), an organization that is composed of prominent members of the entertainment industry who promote the arts as a means to achieve peace, support artistic freedom, and counter the cultural boycott of Israel.