Great O'Brien Episodes. Miles O'Brien was always a likeable character even when he did little more than man a transporter room on the Enterprise-D. But when the Chief came over to DS9 he took center stage and Starfleet's everyman—and the brilliant acting talents of Colm Meaney—really began to shine. In this episode of The Orb hosts Christopher Jones and Matthew Rushing pick some of their favorite episodes featuring the man who is second only to Michael Dorn for most appearances in Star Trek episodes. Find out if you agree with our picks or if there are other Miles Moments that top your own list.