Although I have seen all of the episodes of Homicide it was a long time since I watched the first series. Great characters, stories and acting. A nice helping of laugh-out-loud humour as well. I would say it is probably my favourite "cop" series - up there with the (very different) BBC series "The Cops". Prefer it to "The Wire", though that series gains by being less episodic, letting a main story develop.
As for the question of episode order, well I checked the web sites etc. and concluded that episode 3 on the disk should actually be at episode 9. Big mistake. It makes no sense to watch it in this order, as flashbacks from other shows (4 and 5, say) quite clearly refer to what is in episode 3 on this disk. This episode was transmitted out of order for some reason (it is rather downbeat and atypical, maybe they were concerned about ratings for a new series), and they tacked on a "one night last September" caption at the start of the episode. Watch the series in the order it is presented on these DVDs and enjoy. Terrific!