Well this week I've discovered something else that isn't at all new... in any way.
I don't know how I managed to miss this (probably cos in 2001, when season 1 premiered, I was 15 and didn't really care about crime drama).
But last Sunday I watched 4 episodes in quick succession and then went out the next day and bought the box set.
And I did spend a fair amount of time during the first episode saying 'don't trust him, he was ... in ...'
But that's because I now watch a lot of crime drama. :)