I had watched Spartacus blood and sand and loved it.
I have always been fascinated with Ancient Rome and i thought this series was in fact spectacular to watch.
It follows of rise of Gnaeus Cornelius Lentulus Batiatus played by John Hannah and explains how he became the Dominus of his house and Gladitorial school following the death of his father.
This series also follows the rise of Crixus who you were introduced too in
Spartacus: Blood And Sand Season 1 [DVD] [2010] i found it quite interesting to watch this season as Crixus was a nobody and had to fight very hard to earn his place as Champion of the house.
It also goes into detail about how he came to be the lover of the Lucretia, Domina of the house played by Lucy Lawless.
Most importantly however it details the story of Gannicus, who was not only the Champion of the house before Crixus and earns his freedom, but goes onto become one of Spartacus's most loyal generals in the slave rebellion, this by the way is historical fact, you can read about it here:
http://en.wikipedia.org/wiki/Third_Servile_War
This season is short at only 6 episodes but at an hour each it really is worth the money.
Its authentic, violent, bloody and at times extremely brutal, and very very graphically sexual, so i would not recommend it for kids viewing even for historical purposes.
Personally i would highly recommend it but make sure that you buy the 1st season as well, ive included the link at the top of the page.