1) Luillaby (truly deep felt emotion and drama in this one, one of the best eps of the series)
2) Waiting in the Wings (there were a lot of contenders for this sliot, but this one fits in it best as one of the unique eps of the series).
3) Tommorow (one of the best season enders of the series)
This was a hard choice to make, from this season on is when the series realy got interesting to me (before I liked it, but didnt love it).