Favorite episode

What say you... what is your favorite episode (or episodes) from each season. Limit it to five per season.

Season 1
Sins of the Past
Callisto
The Greater Good

Season 2
Destiny
Return of Callisto
Ten Little Warlords
The Price

Season 3
One Against an Army
Been There, Done That
The Furies
Maternal Instincts

Season 4
Past Imperfect
A Good Day
In Sickness and In Hell
Crusader

Season 5
Motherhood
Looking Death in the Eye
Amphipolis Under Siege
Eve
Livia

Season 6
FIN 1 & 2
Path of Vengeance
Old Ares Had a Farm