14. Oz (1997-2003)
Image Source: IMDb
This groundbreaking hit was HBO’s first one-hour drama. Life in the ‘Emerald City’ of the Oswald State Correctional Facility could be disturbing, hopeful and entertaining. The cast roster is a Who’s Who of solid Hollywood standouts like Ernie Hudson, Terry Kinney, Chris Meloni, J.K. Simmons, Harold Perrineau and Adewale Akinnuoye-Agbaje.