I've watched the entire first series three nights in a row. I love it. My fave characters are:
Smithy - always tries to say quotes but gets them wrong. "That is de-bloody-beautiful", "you've put all your eggs in one bag", "the lights are on but everyone's gone out".
Nessa - always starts her sentences with "to be honest with you, at the end of the day, when alls said and done..."
Stacey - "you're/it's well lush".
But fave line of the series has to be from Uncle Bryn in the first episode. "If you come back Sunday, raped, and I've shown you how to use the alarm, I'll rest easy in my bed". Brilliant!