Had a feeling it would get better by the episode and it did. So I was fully expecting the second series to be better.
I didn't like Teller's fake cockney accent, it was bloody awful, and I thought Elba took a couple of episodes to really get how to play Luther, but he had it nailed by the end of the series. The woman who plays psycho Alice Morgan is seriously good, too.
Reckon it could be a series that runs for a while and becomes more popular and more refined with every series.