Alien nación

One of the best sci-fi and/or buddy cop shows I've ever seen. Like all really good science fiction, it comes up with an utterly improbable premise (namely that an alien slave ship lands on Earth and the humanoid ex-slaves must integrate into human society) and proceeds to be completely real within that premise. Without fail, every single episode of this tragically short-lived series was, in turns, touching, humorous and compelling.

If you can find this show on the air, watch it, its well worth it.