Law and Order is good
television drama.
Technically, it moves very quickly, from action to action to action. Dick Wolf, the creator and executive producer, has explained that he used a peculiarity of televion; he allowed for the series to be divided into the two parts: LAW and ORDER, to permit more stations to broadcast his production. Each half hour is self-contained, but does relate to the other half: Check out the separate writing, directing, and even producing credits.
More creatively, the writing approach follows David Mamet's theory: Arrive late; leave early!
And it uses that cool synthesizer sound to connect sequences.