What are Olajuwon and David Robinson Ewing doing now?

Ewing has been an assistant coach with the Magic for three years. In the past six or seven years since his retirement, he has served as an assistant coach with the Rockets and Wizards. He is the coach of this year's second-year team in the All-Star Rookie Game.

Olajuwon now lives in Houston, and has nothing to do except charity activities. He trains players during the summer offseason, but it is just a private tutor, including Kobe last year and Bynum the year before that

I haven’t heard anything about David Robinson, but he is still in San Antonio and I have read the news that he often goes to the Spurs locker room to tell jokes